California Code of Regulations, Title 24

Subchapter 1 All Occupancies—general Provisions

Subchapter 2 All Occupancies—mandatory Requirements for the Manufacture, Construction and Installation of Systems, Equipment and Building Components

Subchapter 3 Nonresidential, High-Rise Residential Hotel/Motel Occupancies, and Covered Processes—mandatory Requirements

Subchapter 4 Nonresidential, High-Rise Residential and Hotel/Motel Occupancies—mandatory Requirements for Lighting Systems and Equipment, and Electrical Power Distribution Systems

Subchapter 5 Nonresidential, High-Rise Residential and Hotel/Motel Occupancies—performance and Prescriptive Compliance Approaches for Achieving Energy Efficiency

Subchapter 6 Nonresidential, High-Rise Residential and Hotel/Motel Occupancies—additions, Alterations and Repairs

Subchapter 7 Low-Rise Residential Buildings— Mandatory Features and Devices

Subchapter 8 Low-Rise Residential Buildings—performance and Prescriptive Compliance Approaches

Subchapter 9 Low-Rise Residential Buildings—additions and Alterations to Existing Low-Rise Residential Buildings

Appendix 1-A Standards and Documents Referenced in the Energy Efficiency Regulations

History Note Appendix

Sections 110.1 through 110.11 specify requirements for manufacturing, construction and installation of certain systems, equipment, appliances and building components that are installed in buildings within the scope of Section 100.0(a).

NOTE: The requirements of Sections 110.0 through 110.11 apply to newly constructed buildings. Sections 141.0 and 150.2 specify which requirements of Sections 110.1 through 110.11 also apply to additions and alterations to existing buildings.

(a) General Requirements. Systems, equipment, appliances and building components shall only be installed in a building within the scope of Section 100.0(a) regulated by Part 6 only if:

  1. The manufacturer has certified that the system, equipment, appliances or building component complies with the applicable manufacturing provisions of Sections 110.1 through 110.11; and
  2. The system, equipment, appliance or building component complies with all applicable installation provisions of Sections 110.1 through 110.11.

(b) Certification Requirements for Manufactured Systems, Equipment, Appliances and Building Components.

  1. Appliances that are within the scope of Section 1601 of the Appliance Efficiency Regulations shall only be installed if they have been certified to the Energy Commission by the manufacturer, pursuant to the provisions of Title 20 California Code of Regulations, Section 1606; or
  2. Systems, equipment, appliances and building components that are required by Part 6 or the Reference Appendices to be certified to the Energy Commission, which are not appliances that are within the scope of Section 1601 of the Appliance Efficiency Regulations, shall only be installed if they are certified by the manufacturer in a declaration, executed under penalty of perjury under the laws of the State of California, that:

    1. all the information provided pursuant to the certification is true, complete, accurate and in compliance with all applicable requirements of Part 6; and
    2. the equipment, product, or device was tested using the test procedure specified in Part 6 if applicable
  3. The certification status of any system, equipment, appliance or building component shall be confirmed only by reference to:

    1. A directory published or approved by the Commission; or
    2. A copy of the application for certification from the manufacturer and the letter of acceptance from the Commission staff; or
    3. Written confirmation from the publisher of a Commission-approved directory that a device has been certified; or
    4. A Commission-approved label on the device.

NOTE: Part 6 does not require a builder, designer, owner, operator, or enforcing agency to test any certified device to determine its compliance with minimum specifications or efficiencies adopted by the Commission.

(a) Any appliance regulated by the Appliance Efficiency Regulations, Title 20 California Code of Regulations, Section 1601 et seq., may be installed only if the appliance fully complies with Section 1608(a) of those regulations.

(b) Except for those circumstances described in Section 110.1(c), conformance with efficiency levels required to comply with Part 6 mandatory, prescriptive and performance standards shall be verified utilizing data from either:

  1. The Energy Commission’s database of certified appliances maintained pursuant to Title 20 California Code of Regulations Section 1606, and which is available at: www.energy.ca.gov/appliances/database/; or
  2. An equivalent directory published by a federal agency; or
  3. An approved trade association directory as defined in Title 20 California Code of Regulations Section 1606(h).

(c) Conformance with efficiency levels required to comply with Part 6 mandatory, prescriptive and performance standards shall be demonstrated either by default to the mandatory efficiency levels specified in Part 6 or by following procedures approved by the Commission pursuant to Section 10-109 of Title 24, Part 1, when:

  1. Data to verify conformance with efficiency levels required to comply with Part 6 mandatory, prescriptive and performance standards is not available pursuant to subdivision (b); or
  2. Field verification and diagnostic testing is required for compliance with Part 6 and the Energy Commission has not approved a field verification and diagnostic test protocol that is applicable to the appliance; or
  3. The appliance meets the requirements of Section 110.1(a) but has been site-modified in a way that affects its performance; or
  4. The U.S. Department of Energy has approved a waiver from federal test procedures, pursuant to 10 CFR Section 430.27 or Section 431.401 and that waiver fails to specify how the efficiency of the system shall be determined.

Certification by manufacturers. Any space-conditioning equipment listed in this section may be installed only if the manufacturer has certified to the Commission that the equipment complies with all the applicable requirements of this section.

(a) Efficiency. Equipment shall meet the applicable efficiency requirements in Tables 110.2-A through 110.2-K, subject to the following:

  1. If more than one efficiency standard is listed for any equipment in Tables 110.2-A through 110.2-K, the equipment shall meet all the applicable standards that are listed; and
  2. If more than one test method is listed in Tables 110.2-A through 110.2-K, the equipment shall comply with the applicable efficiency standard when tested with each listed test method; and
  3. Where equipment serves more than one function, itshall comply with the efficiency standards applicable to each function; and
  4. Where a requirement is for equipment rated at its “maximum rated capacity” or “minimum rated capacity,” the capacity shall be as provided for and allowed by the controls, during steady-state operation.

    Exception 1 to Section 110.2(a): Water-cooled centrifugal water-chilling packages that are not designed for operation at ANSI/AHRI Standard 550/590 test conditions of 44°F leaving chilled water temperature and 85°F entering condenser water temperature with 3 gallons per minute per ton condenser water flow shall have a maximum full load kW/ton and NPLV ratings adjusted using the following equation:

    Adjusted maximum full-load kW/ton rating = (fullload kW/ton from Table 110.2-D)/Kadj

    Adjusted maximum NPLV rating = (IPLV from Table 110.2-D)/Kadj

    Where:

    Kadj = (A) × (B)

    A = 0.00000014592 × (LIFT)4 − 0.0000346496 × (LIFT)3 + 0.00314196 × (LIFT)2 − 0.147199 × (LIFT) + 3.9302

    LIFT = LvgCond − LvgEvap (°F)

    LvgCond = Full-load leaving condenser fluid temperature (°F)

    LvgEvap = Full-load leaving evaporator fluid temperature (°F)

    B = (0.0015 × LvgEvap) + 0.934

    The adjusted full-load and NPLV values are only applicable for centrifugal chillers meeting all of the following full-load design ranges:

    • Minimum Leaving Evaporator Fluid Temperature: 36°F
    • Maximum Leaving Condenser Fluid Temperature: 115°F
    • LIFT ≥ 20°F and ≤ 80°F

    Centrifugal chillers designed to operate outside of these ranges are not covered by this exception.

    Exception 2 to Section 110.2(a): Positive displacement (air- and water-cooled) chillers with a leaving evaporator fluid temperature higher than 32°F shall show compliance with Table 110.2-D when tested or certified with water at standard rating conditions, per the referenced test procedure.

    Exception 3 to Section 110.2(a): Equipment primarily serving refrigerated warehouses or commercial refrigeration.

(b) Controls for heat pumps with supplementary electric resistance heaters. Heat pumps with supplementary electric resistance heaters shall have controls:

  1. That prevent supplementary heater operation when the heating load can be met by the heat pump alone; and
  2. In which the cut-on temperature for compression heating is higher than the cut-on temperature for supplementary heating, and the cut-off temperature for compression heating is higher than the cut-off temperature for supplementary heating.

    Exception 1 to Section 110.2(b): The controls may allow supplementary heater operation during:

    1. Defrost; and
    2. Transient periods such as start-ups and following room thermostat setpoint advance, if the controls provide preferential rate control, intelligent recovery, staging, ramping or another control mechanism designed to preclude the unnecessary operation of supplementary heating.

    Exception 2 to Section 110.2(b): Room air-conditioner heat pumps.

(c) Thermostats. All unitary heating or cooling systems not controlled by a central energy management control system (EMCS) shall have a setback thermostat.

  1. Setback capabilities.All thermostats shall have a clock mechanism that allows the building occupant to program the temperature setpoints for at least four periods within 24 hours. Thermostats for heat pumps shall meet the requirements of Section 110.2(b).

    Exception to Section 110.2(c): Gravity gas wall heaters, gravity floor heaters, gravity room heaters, noncentral electric heaters, fireplaces or decorative gas appliances, wood stoves, room air conditioners and room air-conditioner heat pumps.

(d) Gas-fired and oil-fired furnace standby loss controls. Gas-fired and oil-fired forced-air furnaces with input ratings ≥ 225,000 Btu/hr shall also have an intermittent ignition or interrupted device (IID), and have either power venting or a flue damper. A vent damper is an acceptable alternative to a flue damper for furnaces where combustion air is drawn from the conditioned space. All furnaces with input ratings ≥ 225,000 Btu/hr, including electric furnaces, that are not located within the conditioned space shall have jacket losses not exceeding 0.75 percent of the input rating.

(e) Open and closed circuit cooling towers. All open and closed circuit cooling tower installations shall comply with the following:

  1. Be equipped with conductivity or flow-based controls that maximize cycles of concentration based on local water quality conditions. Controls shall automate system bleed and chemical feed based on conductivity, or in proportion to metered makeup volume, metered bleed volume, recirculating pump run time, or bleed time. Conductivity controllers shall be installed in accordance with manufacturer’s specifications in order to maximize accuracy.
  2. Documentation of maximum achievable cycles of concentration. Building owners shall document the maximum cycles of concentration based on local water supply as reported annually by the local water supplier, and using the calculator approved by the Energy Commission. The calculator is intended to determine maximum cycles based on a Langelier Saturation Index (LSI) of 2.5 or less. Building owner shall document maximum cycles of concentration on the mechanical compliance form which shall be reviewed and signed by the Professional Engineer (P.E.) of Record.
  3. Be equipped with a flow meter with an analog output for flow either hardwired or available through a gateway on the makeup water line.
  4. Be equipped with an overflow alarm to prevent overflow of the sump in case of makeup water valve failure. Overflow alarm shall send an audible signal or provide an alert via the energy management control system to the tower operator in case of sump overflow.
  5. Be equipped with efficient drift eliminators that achieve drift reduction to 0.002 percent of the circulated water volume for counter-flow towers and 0.005 percent for cross-flow towers.

    Exception to Section 110.2(e): Towers with rated capacity < 150 tons.

(f) Low leakage air-handling units. To qualify as a low leakage air-handling unit for use for meeting the requirements for applicable low leakage air-handling unit compliance credit(s) available in the performance standards set forth in Sections 150.1(b) and 140.1, the manufacturer shall certify to the Energy Commission that the air-handling unit meets the specifications in Reference Joint Appendix JA9.

TABLE 110.2-A

ELECTRICALLY OPERATED UNITARY AIR CONDITIONERS AND CONDENSING UNITS – MINIMUM EFFICIENCY REQUIREMENTS

EQUIPMENT TYPESIZE CATEGORYEFFICIENCYa, bTEST PROCEDUREc
Before 1/1/2016After 1/1/2016
Air conditioners, air cooled both split system and single package> 65,000 Btu/h and < 135,000 Btu/h11.2 EERb

11.4 IEERb
11.2 EER

12.9 IEER
ANSI/AHRI 340/360
> 135,000 Btu/h and < 240,000 Btu/h11.0 EERb

11.2 IEERb
11.0 EER

12.4 IEER
ANSI/AHRI 340/360
> 240,000 Btu/h and < 760,000 Btu/h10.0 EERb

10.1 IEERb
10.0 EER

11.6 IEER
> 760,000 Btu/h9.7 EERb

9.8 IEERb
9.7 EER

11.2 IEER
Air conditioners, water cooled> 65,000 Btu/h and < 135,000 Btu/h12.1 EERb

12.3 IEERb
12.1 EER

13.9 IEER
ANSI/AHRI 340/360
> 135,000 Btu/h and < 240,000 Btu/h12.5 EERb

12.5 IEERb
12.5 EER

13.9 IEER
ANSI/AHRI 340/360
> 240,000 Btu/h and < 760,000 Btu/h12.4 EERb

12.6 IEERb
12.4 EER

13.6 IEER
ANSI/AHRI 340/360
> 760,000 Btu/h12.2 EERb

12.4 IEERb
12.2 EER

13.5 IEER
ANSI/AHRI 340/360
Air conditioners, evaporatively cooled> 65,000 Btu/h and < 135,000 Btu/h12.1 EERb

12.3 IEERb
ANSI/AHRI 340/360
> 135,000 Btu/h and < 240,000 Btu/h12.0 EERb

12.2 IEERb
ANSI/AHRI 340/360
> 760,000 Btu/h11.7 EERb

11.9 IEERb
ANSI/AHRI 340/360
Condensing units, air cooled> 135,000 Btu/h10.5 EER

11.8 IEER
ANSI/AHRI 365
Condensing units, water cooled> 135,000 Btu/h13.5 EER

14.0 IEER
Condensing units, evaporatively cooled> 135,000 Btu/h13.5 EER

14.0 IEER
  1. IEERs are only applicable to equipment with capacity control as specified by ANSI/AHRI 340/360 test procedures.
  2. Deduct 0.2 from the required EERs and IEERs for units with a heating section other than electric resistance heat.
  3. Applicable test procedure and reference year are provided under the definitions.

TABLE 110.2-B

UNITARY AND APPLIED HEAT PUMPS, MINIMUM EFFICIENCY REQUIREMENTS

EQUIPMENT TYPESIZE CATEGORYSUBCATEGORY OR RATING CONDITIONEFFICIENCYa, bTEST PROCEDUREc
Air cooled (cooling mode), both split system and single package≥ 65,000 Btu/h and < 135,000 Btu/h11.0 EER

11.2 IEER
11.0 EER

12.2 IEER
ANSI/AHRI 340/360
≥ 135,000 Btu/h and < 240,000 Btu/h10.6 EER

10.7 IEER
10.6 EER

11.6 IEER
≥ 240,000 Btu/h9.5 EER

9.6 IEER
9.5 EER

10.6 IEER
Water source (cooling mode)≥ 65,000 Btu/h and < 135,000 Btu/h86°F entering water13.0 EERISO-13256-1
Groundwater source (cooling mode)< 135,000 Btu/h59°F entering water18.0 EERISO-13256-1
Ground source (cooling mode)< 135,000 Btu/h77°F entering water14.1 EERISO-13256-1
Water source water-to-water (cooling mode)< 135,000 Btu/h86°F entering water10.6 EERISO-13256-2
Groundwater source water-to-water (cooling mode)< 135,000 Btu/h59°F entering water16.3 EERISO-13256-1
Ground source brine-to-water (cooling mode)< 135,000 Btu/h77°F entering water12.1 EERISO-13256-2
Air cooled (heating mode) Split system and single≥ 65,000 Btu/h and < 135,000 Btu/h (cooling capacity)47°F db/43°F wb outdoor air3.3 COPANSI/AHRI 340/360
17°F db/15°F wb outdoor air2.25 COP
≥ 135,000 Btu/h (cooling capacity)47°F db/43°F wb outdoor air3.2 COP
17°F db/15°F wb outdoor air2.05 COP
Water source (heating mode)< 135,000 Btu/h (cooling capacity)68°F entering water4.3 COPISO-13256-1
≥ 135,000 Btu/h and < 240,000 Btu/h68°F entering water2.90 COP
Groundwater source (heating mode)< 135,000 Btu/h (cooling capacity)50°F entering water7 COPISO-13256-1
Ground source (heating mode)< 135,000 Btu/h (cooling capacity)32°F entering water3.2 COPISO-13256-1
Water source water-to-water (heating mode)< 135,000 Btu/h (cooling capacity)68°F entering water3.7 COPISO-13256-2
Groundwater source brine-to-water (heating mode)< 135,000 Btu/h (cooling capacity)50°F entering water3.1 COPISO-13256-2
Ground source brine-to-water (heating mode)< 135,000 Btu/h (cooling capacity)32°F entering water2.5 COPISO-13256-2
  1. IEERs are only applicable to equipment with capacity control as specified by ANSI/AHRI 340/360 test procedures.
  2. Deduct 0.2 from the required EERs and IEERs for units with a heating section other than electric resistance heat.
  3. Applicable test procedure and reference year are provided under the definitions.

TABLE 110.2-C

AIR-COOLED GAS-ENGINE HEAT PUMPS

EQUIPMENT TYPESIZE CATEGORYSUBCATEGORY OR RATING CONDITIONEFFICIENCYTEST PROCEDUREa
Air-cooled gas-engine heat pump (cooling mode)All capacities95°F db outdoor air0.6 COPANSI Z21.40.4A
Air-cooled gas-engine heat pump (heating mode)All capacities47°F db/43°F wb outdoor air0.72 COPANSI Z21.40.4A
  1. Applicable test procedure and reference year are provided under the definitions.

TABLE 110.2-D

WATER CHILLING PACKAGES—MINIMUM EFFICIENCY REQUIREMENTSa, b

EQUIPMENT TYPESIZE CATEGORYPATH A EFFICIENCYa, bPATH A EFFICIENCYa, bTEST PROCEDUREc
Air cooled, with condenser electrically operated< 150 tons≥ 10.100 EER

≥ 13.700 IPLV
≥ 9.700 EER

≥ 15.800 IPLV
AHRI 550/590
≥ 150 tons≥ 10.100 EER

≥ 14.000 IPLV
≥ 9.700 EER

≥ 16.100 IPLV
Air cooled, without condenser electrically operatedAll capacitiesAir-cooled chillers without condensers must be rated with matching condensers and comply with the aircooled chiller efficiency requirements.
Water cooled, electrically operated reciprocatingAll capacitiesReciprocating units must comply with the watercooled positive displacement efficiency requirements.AHRI 550/590
Water cooled, electrically operated, positive displacement< 75 tons≤ 0.750 kW/ton

≤ 0.600 IPLV
≤ 0.780 kW/ton

≤ 0.500 IPLV
AHRI 550/590
≥ 75 tons and < 150 tons≤ 0.720 kW/ton

≤ 0.560 IPLV
≤ 0.750 kW/ton

≤ 0.490 IPLV
≥ 150 tons and < 300 tons≤ 0.660 kW/ton

≤ 0.540 IPLV
≤ 0.680 kW/ton

≤ 0.440 IPLV
≥ 300 tons and < 300 tons≤ 0.610 kW/ton

≤ 0.520 IPLV
≤ 0.625 kW/ton ≤ 0.410 IPLV
≥ 600 tons≤ 0.560 kW/ton

≤ 0.500 IPLV
≤ 0.585 kW/ton

≤ 0.380 IPLV
Water cooled, electrically operated, centrifugal> 150 ton≤ 0.610 kW/ton

≤ 0.550 IPLV
≤ 0.695 kW/ton

≤ 0.440 IPLV
≥ 150 tons and < 300 tons≤ 0.610 kW/ton

≤ 0.550 IPLV
≤ 0.635 kW/ton

≤ 0.400 IPLV
≥ 300 tons and < 400 tons≤ 0.560 kW/ton

≤ 0.520 IPLV
≤ 0.595 kW/ton

≤ 0.390 IPLV
≥ 400 tons and < 600 tons≤ 0.560 kW/ton

≤ 0.500 IPLV
≤ 0.585 kW/ton

≤ 0.380 IPLV
≥ 600 tons≤ 0.560 kW/ton

≤ 0.500 IPLV
≤ 0.585 kW/ton

≤ 0.380 IPLV
Air cooled absorption single effectAll capacities≥ 600 COPN.A.dANSI/AHRI 560
Water cooled absorption single effectAll capacities≥ 700 COPN.A.d
Absorption double effect, indirect-firedAll capacities≥ 1,000 COP

≥ 1,050 IPLV
N.A.d
Absorption double effect, direct-firedAll capacities≥ 1,000 COP

≥ 1,000 IPLV
N.A.d
Water cooled gas engine driven chillerAll capacities≥ 1.2 COP

≥ 2.0 IPLV
N.A.dANSI Z21.40.4
  1. No requirements for:

    • Centrifugal chillers with design leaving evaporator temperature < 36°F; or
    • Positive displacement chillers with design leaving fluid temperatures ≤ 32°F; or
    • Absorption chillers with design leaving fluid temperature < 40°F.
  2. Must meet the minimum requirements of Path A or Path B. However, both the full load (COP) and IPLV must be met to fulfill the requirements of the applicable path.
  3. See Section 100.1 for definitions.
  4. NA means not applicable.

TABLE 110.2-E

PACKAGED TERMINAL AIR CONDITIONERS AND PACKAGED TERMINAL HEAT PUMPS—MINIMUM EFFICIENCY REQUIREMENTS

EQUIPMENT TYPESIZE CATEGORY (Input)SUBCATEGORY OR RATING CONDITIONEFFICIENCYaTEST PROCEDUREc
PTAC (cooling mode) Newly constructed or newly conditioned buildings or additionsAll capacities95°F db outdoor air14.0 - (0.213 × Cap/ 1000)a EERANSI/AHRI/CSA 310/380
PTAC (cooling mode) ReplacementsbAll capacities95°F db outdoor air10.9 - (0.213 × Cap/1000)a EER
PTHP (cooling mode) Newly constructed or newly conditioned buildings or additionsAll capacities95°F db outdoor air14.0 - (0.213 × Cap/1000)a EER
PTHP (cooling mode) ReplacementsbAll capacities95°F db outdoor air10.8 - (0.213 × Cap/1000)a EER
PTHP (heating mode) Newly constructed or newly conditioned buildings or additionsAll capacities3.7 - (0.026 × Cap/1000)a COP
PTHP (heating mode) ReplacementsbAll capacities2.9 - (0.026 × Cap/1000)a COP
SPVAC (cooling mode)< 65,000 Btu/h95°F db/75°F wb outdoor air10.0 EERANSI/AHRI 390
≥ 65,000 Btu/h and < 135,000 Btu/h95°F db/75°F wb outdoor air10.0 EER
≥ 135,000 Btu/h and < 240,000 Btu/h95°F db/75°F wb outdoor air10.0 EER
SPVAC (Cooling Mode) nonweatherized space constrained≤ 30,000 Btu/h95°F db/75°F wb outdoor air9.20 EER
> 30,000 Btu/h and ≤ 36,000 Btu/h95°F db/75°F wb outdoor air9.00 EER
SPVHP (cooling mode)< 65,000 Btu/h95°F db/75°F wb outdoor air10.0 EER
≥ 65,000 Btu/h and < 135,000 Btu/h95°F db/75°F wb outdoor air10.0 EER
≥ 135,000 Btu/h and < 240,000 Btu/h95°F db/75°F wb outdoor air10.0 EER
SPVHP (Cooling Mode) nonweatherized space constrained≤ 30,000 Btu/h95°F db/75°F wb outdoor air9.20 EER
> 30,000 Btu/h and ≤ 36,000 Btu/h95°F db/75°F wb outdoor air9.00 EER
SPVHP (heating mode)< 65,000 Btu/h47°F db/43°F wb outdoor air3.0 COP
≥ 65,000 Btu/h and < 135,000 Btu/h47°F db/43°F wb outdoor air3.0 COP
≥ 135,000 Btu/h and < 240,000 Btu/h47°F db/43°F wb outdoor air3.0 COP
SPVHP (Heating Mode) nonweatherized space constrained≤ 30,000 Btu/h47°F db/43°F wb outdoor air3.0 COP
> 30,000 Btu/h and ≤ 36,000 Btu/h47°F db/43°F wb outdoor air3.0 COP
  1. Cap means the rated cooling capacity of the product in Btu/h. If the unit’s capacity is less than 7,000 Btu/h, use 7,000 Btu/h in the calculation. If the unit’s capacity is greater than 15,000 Btu/h, use 15,000 Btu/h in the calculation.
  2. Replacement units must be factory labeled as follows: “MANUFACTURED FOR REPLACEMENT APPLICATIONS ONLY; NOT TO BE INSTALLED IN NEWLY CONSTRUCTED BUILDINGS.” Replacement efficiencies apply only to units with existing sleeves less than 16 inches high or less than 42 inch wide and having a cross-sectional area less than 670 square inches.
  3. Applicable test procedure and reference year are provided under the definitions.

TABLE 110.2-F

HEAT TRANSFER EQUIPMENT

EQUIPMENT TYPESIZE CATEGORYMINIMUM EFFICIENCYTEST PROCEDUREb
Liquid-to-liquid heat exchangersPlate typeNRANSI/AHRI 400
  1. NR = No requirement
  2. Applicable test procedure and reference year are provided under the definitions.

TABLE 110.2-G

PERFORMANCE REQUIREMENTS FOR HEAT REJECTION EQUIPMENT

EQUIPMENT TYPETOTAL SYSTEM HEAT REJECTION CAPACITY AT RATED CONDITIONSSUBCATEGORY OR RATING CONDITIONPERFORMANCE REQUIREDa, b, c, dTEST PROCEDUREe
Propeller or axial fan open-circuit cooling towersAll95°F entering water 85°F leaving water 75°F entering air wb≥ 42.1 gpm/hpCTI ATC-105 and CTI STD-201
Centrifugal fan open-circuit cooling towersAll95°F entering water 85°F leaving water 75°F entering air wb≥ 20.0 gpm/hp
Propeller or axial fan closed-circuit cooling towersAll102°F entering water 90°F leaving water 75°F entering air wb≥ 14.0 gpm/hp
Centrifugal fan closed-circuit cooling towersAll102°F entering water 90°F leaving water 75°F entering air wb≥ 7.0 gpm/hp
Propeller or axial fan evaporative condensersAllR-507A test fluid 165°F entering gas temp 105°F condensing temp 75°F entering air wb≥ 157,000 Btu/h • hpCTI ATC-106
AllAmmonia test fluid 140°F entering gas temp 96.3°F condensing temp 75°F entering air wb≥ 134,000 Btu/h • hp
Centrifugal fan evaporative condensersAllR-507A test fluid 165°F entering gas temp 105°F condensing temp 75°F entering air wb≥ 135,000 Btu/h • hp
AllAmmonia test fluid 140°F entering gas temp 96.3°F condensing temp 75°F entering air wb≥ 110,000 Btu/h • hp
Air cooled condensersAll125°F condensing temperature R22 test fluid 190°F entering gas temperature 15°F subcooling 95°F entering drybulb176,000 Btu/h•hpANSI/AHRI 460
  1. For purposes of this table, open-circuit cooling tower performance is defined as the water flow rating of the tower at the given rated conditions divided by the fan motor nameplate power.
  2. For purposes of this table, closed-circuit cooling tower performance is defined as the process water flow rating of the tower at the given rated conditions divided by the sum of the fan motor nameplate rated power and the integral spray pump motor nameplate power.
  3. For purposes of this table air-cooled condenser performance is defined as the heat rejected from the refrigerant divided by the fan motor nameplate power.
  4. Open cooling towers shall be tested using the test procedures in CTI ATC-105. Performance of factory-assembled open cooling towers shall be either certified as base models as specified in CTI STD-201 or verified by testing in the field by a CTI approved testing agency. Open factory assembled cooling towers with custom options added to a CTI certified base model for the purpose of safe maintenance or to reduce environmental or noise impact shall be rated at 90 percent of the CTI certified performance of the associated base model or at the manufacturer’s stated performance, whichever is less. Base models of open factory-assembled cooling towers are open cooling towers configured in exact accordance with the Data of Record submitted to CTI as specified by CTI STD-201. There are no certification requirements for field-erected cooling towers.
  5. Applicable test procedure and reference year are provided under the definitions.

For refrigerated warehouses or commercial refrigeration applications, condensers shall comply with requirements specified by Section 120.6(a) or Section 120.6(b).

TABLE 110.2-H

ELECTRICALLY OPERATED VARIABLE REFRIGERANT FLOW (VRF) AIR CONDITIONERS MINIMUM EFFICIENCY REQUIREMENTS

EQUIPMENT TYPESIZE CATEGORYHEATING SECTION TYPESUBCATEGORY OR RATING CONDITIONMINIMUM EFFICIENCYTEST PROCEDUREa
VRF Air conditioners, Air cooled< 65,000 Btu/hAllVRF multisplit system13.0 SEERANSI/AHRI 1230
≥ 65,000 Btu/h and < 135,000 Btu/hElectric resistance (or none)VRF multisplit system11.2 EER

13.1 IEERb
≥ 135,000 Btu/h and < 240,000 Btu/hElectric resistance (or none)VRF multisplit system11.0 EER

12.9 IEERb
≥ 240,000 Btu/hElectric resistance (or none)VRF multisplit system10.0 EER

11.6 IEERb
  1. Applicable test procedure and reference year are provided under the definitions.
  2. IEERs are only applicable to equipment with capacity control as specified in ANSI/AHRI 1230 test procedures.

TABLE 110.2-I

ELECTRICALLY OPERATED VARIABLE REFRIGERANT FLOW AIR-TO-AIR AND APPLIED HEAT PUMPS—MINIMUM EFFICIENCY REQUIREMENTS

EQUIPMENT TYPESIZE CATEGORYHEATING SECTION TYPESUBCATEGORY OR RATING CONDITIONMINIMUM EFFICIENCYTEST PROCEDUREa, b
VRF Air cooled (cooling mode)< 65,000 Btu/hAllVRF multisplit system13.0 SEERAHRI 1230
≥ 65,000 Btu/h and < 135,000 Btu/hElectric resistance (or none)VRF multisplit systema11.2 EER

12.9 IEERc
≥ 135,000 Btu/h and < 240,000 Btu/hElectric resistance (or none)VRF multisplit systema10.6 EER

12.3 IEERc
≥ 240,000 Btu/hElectric resistance (or none)VRF multisplit systema9.5 EER

11.0 IEERc
VRF Water source (cooling mode)< 65,000 Btu/hAllVRF multisplit systema 86°F entering water12.0 EERAHRI 1230
≥ 65,000 Btu/h and < 135,000 Btu/hAllVRF multisplit systema 86°F entering water12.0 EER
≥ 135,000 Btu/hAllVRF multisplit systema 86°F entering water10.0 EER
VRF Groundwater source (cooling mode)< 135,000 Btu/hAllVRF multisplit systema 59°F entering water16.2 EERAHRI 1230
≥ 135,000 Btu/hAllVRF multisplit systema 59°F entering water13.8 EER
VRF Ground source (cooling mode)< 135,000 Btu/hAllVRF multisplit systema 77°F entering water13.4 EERAHRI 1230
≥ 135,000 Btu/hAllVRF multisplit systema 77°F entering water11.0 EER
VRF Air cooled (heating mode)> 65,000 Btu/h (cooling capacity)VRF multisplit system7.7 HSPFAHRI 1230
> 65,000 Btu/h and < 135,000 Btu/h (cooling capacity)VRF multisplit system 47°F db/43°F wb outdoor air3.3 COP
VRF multisplit system 47°F db/43°F wb outdoor air2.25 COP
> 135,000 Btu/h (cooling capacity)VRF multisplit system 47°F db/43°F wb outdoor air3.2 COP
VRF multisplit system 17°F db/15°F wb outdoor air2.05 COP
VRF Water source (heating mode)< 135,000 Btu/h (cooling capacity)VRF multisplit system 68°F entering water4.2 COPAHRI 1230
≥ 135,000 Btu/h (cooling capacity)VRF multisplit system 68°F entering water3.9 COP
VRF Groundwater source (heating mode)< 135,000 Btu/h (cooling capacity)VRF multisplit system 50°F entering water3.6 COPAHRI 1230
≥ 135,000 Btu/h (cooling capacity)VRF multisplit system 50°F entering water3.3 COP
VRF Groundwater source (heating mode)< 135,000 Btu/h (cooling capacity)VRF multisplit system 32°F entering water3.1 COPAHRI 1230
≥ 135,000 Btu/h (cooling capacity)VRF multisplit system 32°F entering water2.8 COP
  1. Deduct 0.2 from the required EERs and IEERs for variable refrigerant flow (VRF) multisplit system units with a heating recovery section.
  2. Applicable test procedure and reference year are provided under the definitions.
  3. IEERs are only applicable to equipment with capacity control as specified in ANSI/AHRI 1230 test procedures.

TABLE 110.2-J

WARM-AIR FURNACES AND COMBINATION WARM-AIR FURNACES/AIR-CONDITIONING UNITS, WARM-AIR DUCT FURNACES, AND UNIT HEATERSc, f

EQUIPMENT TYPESIZE CATEGORY (Input)SUBCATEGORY OR RATING CONDITIONbMINIMUM EFFICIENCYd, eTEST PROCEDUREa
Warm-Air furnace, gas-fired< 225,000 Btu/hMaximum capacity78% AFUE or 80% EtDOE 10 CFR Part 430 or Section 2.39, Thermal Efficiency, ANSI Z21.47
≥ 225,000 Btu/hMaximum capacity80% EtSection 2.39, Thermal Efficiency, ANSI Z21.47
Warm-Air furnace, oil-fired< 225,000 Btu/hMaximum capacity78% AFUE or 80% EtDOE 10 CFR Part 430 or Section 42, Combustion, UL 727
≥ 225,000 Btu/hMaximum capacity81% EtSection 42, Combustion, UL 727
Warm-Air duct furnaces, gas-firedAll capacitiesMaximum capacity80% EtSection 2.10, Efficiency, ANSI Z83.8
Warm-Air unit heaters, gas-firedAll capacitiesMaximum capacity80% EtSection 2.10, Efficiency, ANSI Z83.8
Warm-Air unit heaters, oil-firedAll capacitiesMaximum capacity80% EtSection 40, Combustion, UL 731
  1. Applicable test procedure and reference year are provided under the definitions.
  2. Compliance of multiple firing rate units shall be at maximum firing rate.
  3. Combustion units not covered by NAECA (3-phase power or cooling capacity greater than or equal to 19 kW) may comply with either rating.
  4. Et = thermal efficiency. Units must also include an interrupted or intermittent ignition device (IID), have jacket losses not exceeding 0.75% of the input rating, and have either power venting or a flue damper. A vent damper is an acceptable alternative to a flue damper for those furnaces where combustion air is drawn from the conditioned space.
  5. Ec = combustion efficiency (100% less flue losses). See test procedure for detailed discussion.
  6. As of August 8, 2008, according to the Energy Policy Act of 2005, units must also include interrupted or intermittent ignition device (IID) and have either power venting or an automatic flue damper.

TABLE 110.2-K

GAS- AND OIL-FIRED BOILERS, MINIMUM EFFICIENCY REQUIREMENTS

EQUIPMENT TYPESIZE CATEGORY (Input)SUBCATEGORY OR RATING CONDITIONbMINIMUM EFFICIENCYb, cTEST PROCEDUREa
Before 3/2/2020After 3/2/2020
Boiler, hot waterGas-Fired< 300,000 Btu/h82% AFUE82% AFUEDOE 10 CFR Part 430
≥ 300,000 Btu/h and ≤ 2,500,000 Btu/hd80% Et80% EtDOE 10 CFR Part 431
> 2,500,000 Btu/he82% Et82% Et
Oil-Fired< 300,000 Btu/h84% AFUE84% AFUEDOE 10 CFR Part 430
≥ 135,000 Btu/h and ≤ 240,000 Btu/hd82% Et82% EtDOE 10 CFR Part 431
> 2,500,000 Btu/he84% Et84% Et
Boiler, steamGas-Fired< 300,000 Btu/h82% AFUE82% AFUEDOE 10 CFR Part 430
Gas-Fired all, except natural draft≥ 300,000 Btu/h and ≤ 2,500,000 Btu/hd79% Et79% EtDOE 10 CFR Part 431
> 2,500,000 Btu/he79% Et79% EtDOE 10 CFR Part 431
Gas-Fired, natural draft≥ 300,000 Btu/h and ≤ 2,500,000 Btu/hd77% Et79% EtDOE 10 CFR Part 431
> 2,500,000 Btu/he77% Et79% EtDOE 10 CFR Part 431
Oil-Fired< 300,000 Btu/h82% AFUE82% AFUEDOE 10 CFR Part 431
≥ 300,000 Btu/h and ≤ 2,500,000 Btu/hd81% Et81% EtDOE 10 CFR Part 431
> 2,500,000 Btu/he81% Et81% EtDOE 10 CFR Part 431
  1. Applicable test procedure and reference year are provided under the definitions.
  2. Ec = combustion efficiency (100% less flue losses). See reference document for detailed information.
  3. Et = thermal efficiency. See test procedure for detailed information.
  4. Maximum capacity—minimum and maximum ratings as provided for and allowed by the unit’s controls.
  5. Included oil-fired (residual).

(a) Certification by manufacturers. Any service water-heating system or equipment may be installed only if the manufacturer has certified that the system or equipment complies with all of the requirements of this subsection for that system or equipment.

  1. Temperature controls for service water-heating systems. Service water-heating systems shall be equipped with automatic temperature controls capable of adjustment from the lowest to the highest acceptable temperature settings for the intended use as listed in Table 3, Chapter 50 of the ASHRAE Handbook, HVAC Applications Volume.

    Exception to Section 110.3(a)1: Residential occupancies.

(b) Efficiency. Equipment shall meet the applicable requirements of the Appliance Efficiency Regulations as required by Section 110.1, subject to the following:

  1. If more than one standard is listed in the Appliance Efficiency Regulations, the equipment shall meet all the standards listed; and
  2. If more than one test method is listed in the Appliance Efficiency Regulations, the equipment shall comply with the applicable standard when tested with each test method; and
  3. Where equipment can serve more than one function, such as both heating and cooling, or both space heating and water heating, it shall comply with all the requirements applicable to each function; and
  4. Where a requirement is for equipment rated at its “maximum rated capacity” or “minimum rated capacity,” the capacity shall be as provided for and allowed by the controls, during steady-state operation.

(c) Installation. Any service water-heating system or equipment may be installed only if the system or equipment complies with all of the applicable requirements of this subsection for the system or equipment.

  1. Outlet temperature controls. On systems that have a total capacity greater than 167,000 Btu/hr, outlets that require higher than service water temperatures as listed in the ASHRAE Handbook, Applications Volume, shall have separate remote heaters, heat exchangers or boosters to supply the outlet with the higher temperature.
  2. Controls for hot water distribution systems. Service hot water systems with circulating pumps or with electrical heat trace systems shall be capable of automatically turning off the system.
  3. Temperature controls for public lavatories. The controls shall limit the outlet temperature to 110°F.
  4. Insulation. Unfired service water heater storage tanks and backup tanks for solar water-heating systems shall have:

    1. External insulation with an installed R-value of at least R-12; or
    2. Internal and external insulation with a combined R-value of at least R-16; or
    3. The heat loss of the tank surface based on an 80°F water-air temperature difference shall be less than 6.5 Btu per hour per square foot.
  5. Water heating recirculation loops serving multiple dwelling units, high-rise residential, hotel/motel and nonresidential occupancies. A water heating recirculation loop is a type of hot water distribution system that reduces the time needed to deliver hot water to fixtures that are distant from the water heater, boiler or other water heating equipment. The recirculation loop is comprised of a supply portion, connected to branches that serve multiple dwelling units, guest rooms, or fixtures and a return portion that completes the loop back to the water heating equipment. A water heating recirculation loop shall meet the following requirements:

    1. Air release valve or vertical pump installation. An automatic air release valve shall be installed on the recirculation loop piping on the inlet side of the recirculation pump and no more than 4 feet from the pump. This valve shall be mounted on top of a vertical riser at least 12 inches in length and shall be accessible for replacement and repair. Alternatively, the pump shall be installed on a vertical section of the return line.
    2. Recirculation loop backflow prevention. A check valve or similar device shall be located between the recirculation pump and the water heating equipment to prevent water from flowing backwards though the recirculation loop.
    3. Equipment for pump priming. A hose bibb shall be installed between the pump and the water heating equipment. An isolation valve shall be installed between the hose bibb and the water heating equipment. This hose bibb is used for bleeding air out of the pump after pump replacement.
    4. Pump isolation valves. Isolation valves shall be installed on both sides of the pump. These valves may be part of the flange that attaches the pump to the pipe. One of the isolation valves may be the same isolation valve as in Item C.
    5. Cold water supply and recirculation loop connection to hot water storage tank. Storage water heaters and boilers shall be plumbed in accordance with the manufacturer’s specifications The cold water piping and the recirculation loop piping shall not be connected to the hot water storage tank drain port.
    6. Cold water supply backflow prevention. A check valve shall be installed on the cold water supply line between the hot water system and the next closest tee on the cold water supply line. The system shall comply with the expansion tank requirements as described in the California Plumbing Code Section 608.3.
  6. Service water heaters in state buildings. Any newly constructed building constructed by the State shall derive its service water heating from a system that provides at least 60 percent of the energy needed for service water heating from site solar energy or recovered energy.

    Exception to Section 110.3(c)6: Buildings for which the state architect determines that service water heating from site solar energy or recovered energy is economically or physically infeasible.

  7. Isolation valves. Instantaneous water heaters with an input rating greater than 6.8 kBTU/hr (2 kW) shall have isolation valves on both the cold water supply and the hot water pipe leaving the water heater, and hose bibbs or other fittings on each valve for flushing the water heater when the valves are closed.

(a) Certification by manufacturers. Any pool or spa heating system or equipment may be installed only if the manufacturer has certified that the system or equipment has all of the following:

  1. Efficiency. A thermal efficiency that complies with the Appliance Efficiency Regulations; and
  2. On-off switch. A readily accessible on-off switch, mounted on the outside of the heater that allows shutting off the heater without adjusting the thermostat setting; and
  3. Instructions. A permanent, easily readable and weatherproof plate or card that gives instruction for the energy efficient operation of the pool or spa heater and for the proper care of pool or spa water when a cover is used; and
  4. Electric resistance heating. No electric resistance heating; and

    Exception 1 to Section 110.4(a)4: Listed package units with fully insulated enclosures, and with tight-fitting covers that are insulated to at least R-6.

    Exception 2 to Section 110.4(a)4: Pools or spas deriving at least 60 percent of the annual heating energy from site solar energy or recovered energy.

(b) Installation. Any pool or spa system or equipment shall be installed with all of the following:

  1. Piping. At least 36 inches of pipe shall be installed between the filter and the heater or dedicated suction and return lines, or built-in or built-up connections shall be installed to allow for the future addition of solar heating equipment; and
  2. Covers. A cover for outdoor pools or outdoor spas that have a heat pump or gas heater.
  3. Directional inlets and time switches for pools. If the system or equipment is for a pool:

    1. The pool shall have directional inlets that adequately mix the pool water; and
    2. A time switch or similar control mechanism shall be installed as part of a pool water circulation control system that will allow all pumps to be set or programmed to run only during off-peak electric demand period, and for the minimum time necessary to maintain the water in the condition required by applicable public health standards.

Any natural gas system or equipment listed below may be installed only if it does not have a continuously burning pilot light:

(a) Fan-type central furnaces.

(b) Household cooking appliances.

Exception to Section 110.5(b): Household cooking appliances without an electrical supply voltage connection and in which each pilot consumes less than 150 Btu/hr.

(c) Pool heaters.

(d) Spa heaters.

(a) Certification of fenestration products and exterior doors other than field-fabricated. Any fenestration product and exterior door, other than field-fabricated fenestration products and field-fabricated exterior doors, may be installed only if the manufacturer has certified to the Commission, or if an independent certifying organization approved by the Commission has certified, that the product complies with all of the applicable requirements of this subsection.

  1. Air leakage. Manufactured fenestration products and exterior doors shall have air infiltration rates not exceeding 0.3 cfm/ft2 of window area, 0.3 cfm/ft2 of door area for residential doors, 0.3 cfm/ft2 of door area for nonresidential single doors (swinging and sliding), and 1.0 cfm/ft2 for nonresidential double doors (swinging), when tested according to NFRC-400 or ASTM E283 at a pressure differential of 75 pascals (or 1.57 pounds/ft2), incorporated herein by reference.

    NOTES TO SECTION 110.6(a)1:

    1. Pet doors must meet 0.3 cfm/ft2 when tested according to ASTM E283 at 75 pascals (or 1.57 pounds per square foot).
    2. AAMA/WDMA/CSA 101/I.S.2/A440-2011 specification is equivalent to ASTM E283 at a pressure differential of 75 pascals (or 1.57 pounds per square foot) satisfies the air leakage certification requirements of this section.

      Exception to Section 110.6(a)1: Field-fabricated fenestration and field-fabricated exterior doors.

  2. U-factor. The fenestration product’s U-factor shall be rated in accordance with NFRC 100, or use the applicable default U-factor set forth in Table 110.6-A.

    Exception 1 to Section 110.6(a)2: If the fenestration product is a skylight or a vertical site-built fenestration product in a building covered by the nonresidential standards with less than 1,000 square feet of site-built fenestration, the default U-factor may be calculated as set forth in Reference Nonresidential Appendix NA6.

    Exception 2 to Section 110.6(a)2: If the fenestration product is an alteration consisting of any area replacement of glass in a skylight product or in a vertical site-built fenestration product, in a building covered by the nonresidential standards, the default U-factor may be calculated as set forth in Reference Nonresidential Appendix NA6.

  3. Solar heat gain coefficient SHGC. The fenestration product’s SHGC shall be rated in accordance with NFRC 200, or use the applicable default SHGC set forth in Table 110.6-B.

    Exception 1 to Section 110.6(a)3: If the fenestration product is a skylight or a vertical site-built fenestration product in a building covered by the nonresidential standards with less than 1,000 square feet of sitebuilt fenestration, the default SHGC may be calculated as set forth in Reference Nonresidential Appendix NA6.

    Exception 2 to Section 110.6(a)3: If the fenestration product is an alteration consisting of any area replacement of glass in a skylight product or in a vertical site-built fenestration product, in a building covered by the nonresidential standards, the default SHGC may be calculated as set forth in Reference Nonresidential Appendix NA6.

  4. Visible transmittance (VT). The fenestration product’s VT shall be rated in accordance with NFRC 200 or ASTM E972. For tubular skylights VT shall be rated using NFRC 203.

    Exception 1 to Section 110.6(a)4: If the fenestration product is a skylight or a vertical site-built fenestration product in a building covered by the nonresidential standards with less than 1,000 square feet of site-built fenestration, the default VT may be calculated as set forth in Reference Nonresidential Appendix NA6.

    Exception 2 to Section 110.6(a)4: If the fenestration product is an alteration consisting of any area; replacement of glass in a skylight product or in a vertical site-built fenestration product, in a building covered by the nonresidential standards, the default VT may be calculated as set forth in Reference Non-residential Appendix NA6.

  5. Labeling. Fenestration products shall:

    1. Have a temporary label for manufactured fenestration products or a label certificate when the component modeling approach (CMA) is used and for site-built fenestration meeting the requirements of Section 10-111(a)1. The temporary label shall not be removed before inspection by the enforcement agency; and
    2. Have a permanent label or label certificate when the component modeling approach (CMA) is used and for site-built fenestration meeting the requirements of Section 10-111(a)2 if the product is rated using NFRC procedures.
  6. Fenestration acceptance requirements. Before an occupancy permit is granted site-built fenestration products in other than low-rise residential buildings shall be certified as meeting the Acceptance Requirements for Code Compliance, as specified in the Reference Nonresidential Appendix NA7 to ensure that site-built fenestration meets Standards requirements, including a matching label certificate for product(s) installed and be readily accessible at the project location. A certificate of acceptance certifying that the fenestration product meets the acceptance requirements shall be completed, signed and submitted to the enforcement agency.

    Exception to Section 110.6(a): Fenestration products removed and reinstalled as part of a building alteration or addition.

(b) Installation of field-fabricated fenestration and exterior doors. Field-fabricated fenestration and field-fabricated exterior doors may be installed only if the compliance documentation has demonstrated compliance for the installation using U-factors from Table 110.6-A and SHGC values from Table 110.6-B. Field-fabricated fenestration and field-fabricated exterior doors shall be caulked between the fenestration products or exterior door and the building, and shall be weatherstripped.

Exception to Section 110.6(b): Unframed glass doors and fire doors need not be weatherstripped or caulked.

TABLE 110.6-A

DEFAULT FENESTRATION PRODUCT U-FACTORS

FRAME1,2PRODUCT TYPESINGLE PANE3, 4 U-FACTORDOUBLE PANE1, 3, 4 U-FACTORGLASS BLOCK2, 3 U-FACTOR
MetalOperable1.280.790.87
Fixed1.190.710.72
Greenhouse/garden window2.261.40NA
Doors1.250.77NA
Skylight1.981.3NA
Metal, thermal breakOperableNA0.66NA
FixedNA0.55NA
Greenhouse/garden windowNA1.12NA
DoorsNA0.59NA
SkylightNA1.11NA
NonmetalOperable0.990.580.60
Fixed1.040.550.57
Greenhouse/garden window0.990.53NA
Doors1.941.06NA
Skylight1.470.84NA
  1. For all dual-glazed fenestration products, adjust the listed U-factors as follows:

    1. Add 0.05 for products with dividers between panes if spacer is less than 7/16 inch wide.
    2. Add 0.05 to any product with true divided lite (dividers through the panes).
  2. Translucent or transparent panels shall use glass block values when not rated by NFRC 100.
  3. Visible Transmittance (VT) shall be calculated by using Reference Nonresidential Appendix NA6.
  4. Windows with window film applied that is not rated by NFRC 100 shall use the default values from this table.

TABLE 110.6-B

DEFAULT SOLAR HEAT GAIN COEFFICIENT

FRAME TYPEPRODUCTGLAZINGFENESTRATION PRODUCT SHGC
Single Pane2, 3 SHGCDouble Pane2, 3 SHGCGlass Block1, 2 SHGC
MetalOperableClear0.800.700.70
FixedClear0.830.730.73
OperableTinted0.670.59NA
FixedTinted0.680.60NA
Metal, thermal breakOperableClearNA0.63NA
FixedClearNA0.69NA
OperableTintedNA0.53NA
FixedTintedNA0.57NA
NonmetalOperableClear0.740.650.70
FixedClear0.760.670.67
OperableTinted0.600.53NA
FixedTinted0.630.55NA
  1. Translucent or transparent panels shall use glass block values when not rated by NFRC 200.
  2. Visible Transmittance (VT) shall be calculated by using Reference Nonresidential Appendix NA6.
  3. Windows with window film applied that is not rated by NFRC 200 shall use the default values from this table.
All joints, penetrations and other openings in the building envelope that are potential sources of air leakage shall be caulked, gasketed, weather-stripped or otherwise sealed to limit infiltration and exfiltration.

(a) Insulation certification by manufacturers. Any insulation shall be certified by Department of Consumer Affairs, Bureau of Home Furnishings and Thermal Insulation that the insulation conductive thermal performance is approved pursuant to the California Code of Regulations, Title 24, Part 12, Chapters 12 – 13, Article 3, “Standards for Insulating Material.”

(b) Installation of urea formaldehyde foam insulation. Urea formaldehyde foam insulation may be applied or installed only if:

  1. It is installed in exterior side walls; and
  2. A 4-mil-thick plastic polyethylene vapor retarder or equivalent plastic sheathing vapor retarder is installed between the urea formaldehyde foam insulation and the interior space in all applications.

(c) Flamespread rating of insulation. All insulating material shall be installed in compliance with the flamespread rating and smoke density requirements of the CBC.

(d) Installation of insulation in existing buildings. Insulation installed in an existing attic, or on an existing duct or water heater, shall comply with the applicable requirements of subsections 1, 2 and 3 below. If a contractor installs the insulation, the contractor shall certify to the customer, in writing, that the insulation meets the applicable requirements of subsections 1, 2 and 3 below.

  1. Attics. If insulation is installed in the existing attic of a low-rise residential building, the R-value of the total amount of insulation (after addition of insulation to the amount, if any, already in the attic) shall meet the requirements of Section 150.0(a).

    Exception to Section 110.8(d)1: Where the accessible space in the attic is not large enough to accommodate the required R-value, the entire accessible space shall be filled with insulation, provided such installation does not violate Section 1203.2 of Title 24, Part 2.

  2. Water heaters. If external insulation is installed on an existing unfired water storage tank or on an existing back-up tank for a solar water-heating system, it shall have an R-value of at least R-12, or the heat loss of the tank surface based on an 80°F water-air temperature difference shall be less than 6.5 Btu per hour per square foot.
  3. Ducts. If insulation is installed on an existing space-conditioning duct, it shall comply with Section 605.0 of the CMC.

(e) Reserved.

(f) Reserved.

(g) Insulation requirements for heated slab floors. Heated slab floors shall be insulated according to the requirements in Table 110.8-A.

  1. Insulation materials in ground contact must:

    1. Comply with the certification requirements of Section 110.8(a); and
    2. Have a water absorption rate for the insulation material alone without facings that is no greater than 0.3 percent when tested in accordance with Test Method A – 24 Hour-Immersion of ASTM C272.
    3. Water vapor permeance no greater than 2.0 perm/inch when tested in accordance with ASTM E96.
  2. Insulation installation must:

    1. Be covered with a solid guard that protects against damage from ultraviolet radiation, moisture, landscaping operation, equipment maintenance and wind; and
    2. Include a rigid plate, which penetrates the slab and blocks the insulation from acting as a conduit for insects from the ground to the structure above the foundation.

(h) Wet insulation systems. When insulation is installed on roofs above the roofing membrane or layer used to seal the roof from water penetration, the effective R-value of the insulation shall be as specified in Reference Joint Appendix JA4.

(i) Roofing products solar reflectance and thermal emittance.

  1. In order to meet the requirements of Sections 140.1, 140.2, 140.3(a)1, 141.0(b)2B, 150.1(c)11, 150.2(b)1H or 150.2(b)2, a roofing product’s thermal emittance and an aged solar reflectance shall be certified and labeled according to the requirements of Section 10-113.

    Exception 1 to Section 110.8(i)1: Roofing products that are not certified according to Section 10-113 shall assume the following default aged solar reflectance/thermal emittance values:

    1. For asphalt shingles: 0.08/0.75
    2. For all other roofing products: 0.10/0.75
  2. If CRRC testing for an aged solar-reflectance is not available for any roofing products, the aged value shall be derived from the CRRC initial value using the equation ρaged = [0.2 + β[ρinitial - 0.2], where ρinitial = the initial solar reflectance and soiling resistance b is listed by product type in Table 110.8-B.
  3. Solar Reflectance Index (SRI), calculated as specified by ASTM E1980-01, may be used as an alternative to thermal emittance and an aged solar reflectance when complying with the requirements of Sections 140.1, 140.2, 140.3(a)1, 141.0(b)2B, 150.1(c)11, 150.2(b)H or 150.2(b)2. SRI calculations shall be based on moderate wind velocity of 2 – 6 meters per second. The SRI shall be calculated based on the aged reflectance value of the roofing products.
  4. Liquid applied roof coatings applied to low-sloped roofs in the field as the top surface of a roof covering shall:

    1. Be applied across the entire roof surface to meet the dry mil thickness or coverage recommended by the coating manufacturer, taking into consideration the substrate on which the coating is applied, and
    2. Meet the minimum performance requirements listed in Table 110.8-B or the minimum performance requirements of ASTM C836, D3468, or D6694, whichever are appropriate to the coating material.

      Exception 1 to Section 110.8(i)4B: Aluminum-pigmented asphalt roof coatings shall meet the requirements of ASTM D2824 and be installed as specified by ASTM D3805.

      Exception 2 to Section 110.8(i)4B: Cement-based roof coatings shall contain a minimum of 20 percent cement and shall meet the requirements of ASTM C1583, ASTM D822 and ASTM D5870.

(j) Radiant barrier. A radiant barrier shall have an emittance of 0.05 or less, tested in accordance with ASTM C1371 or ASTM E408, and shall be certified to the Department of Consumer Affairs as required by Title 24, Part 12, Chapter 12-13, Standards for Insulating Material.

TABLE 110.8-A

SLAB INSULATION REQUIREMENTS FOR HEATED SLAB-ON-GRADE

INSULATION LOCATIONINSULATION ORIENTATIONINSTALLATION REQUIREMENTSCLIMATE ZONEINSULATION R-FACTOR
Outside edge of heated slab, either inside or outside the foundation wallVerticalFrom the level of the top of the slab, down 16 inches or to the frost line, whichever is greater. Insulation may stop at the top of the footing where this is less than the required depth. For below grade slabs, vertical insulation shall be extended from the top of the foundation wall to the bottom of the foundation (or the top of the footing) or to the frost line, whichever is greater.1 - 155
1610
Between heated slab and outside foundation wallVertical and horizontalVertical insulation from top of slab at inside edge of outside wall down to the top of the horizontal insulation. Horizontal insulation from the outside edge of the vertical insulation extending 4 feet toward the center of the slab in a direction normal to the outside of the building in plan view.1 - 155
1610 vertical and 7 horizontal

TABLE 110.8-B

VALUES OF SOILING RESISTANCE β BY PRODUCT TYPE

PRODUCT TYPECRRC PRODUCT CATEGORYβ
Field-Applied coatingField-Applied coating0.65
OtherNot a field-applied coating0.70

TABLE 110.8-C

MINIMUM PERFORMANCE REQUIREMENTS FOR LIQUID APPLIED ROOF COATINGS

PHYSICAL PROPERTYASTM TEST PROCEDUREREQUIREMENT
Initial percent elongation (break)D2370Minimum 200% @ 73°F (23°C)
Initial percent elongation (break) or initial flexibilityD2370Minimum 60% @ 0°F (-18°C)
D522, Test BMinimum pass 1″ mandrel @ 0°F (-18°C)
Initial tensile strength (maximum stress)D2370Minimum 100 psi (1.38 Mpa) @ 73°F (23°C)
Initial tensile strength (maximum stress) or initial flexibilityD2370Minimum 200 psi (2.76 Mpa) @ 0°F (-18°C)
D522, Test BMinimum pass 1″ mandrel @ 0°F (-18°C)
Final percent elongation (break) after accelerated weathering 1000 hD2370Minimum 100% @ 73°F (23°C)
Final percent elongation (break) after accelerated weathering 100 hD2370Minimum 40% @ 0°F (-18°C)
OR
Flexibility after accelerated weathering 100 hD522, Test BMinimum pass 1″ mandrel @ 0°F (-18°C)
PermeanceD1653Maximum 50 perms
Accelerated weathering 1000 hD4798No cracking or checking1
  1. Any cracking or checking visible to the eye fails the test procedure.

(a) All lighting control devices and systems, ballasts and luminaires subject to the requirements of Section 110.9 shall meet the following requirements:

  1. Shall be installed only if the lighting control device or system, ballast or luminaire complies with all of the applicable requirements of Section 110.9.
  2. Lighting controls may be individual devices (Self-Contained lighting control) or systems (Lighting control systems) consisting of two or more components.
  3. Self-Contained lighting controls, as defined in Section 100.1, shall be certified by the manufacturer as required by the Title 20 Appliance Efficiency Regulations.
  4. Lighting control systems, as defined in Section 100.1, shall be a fully functional lighting control system complying with the applicable requirements in Section 110.9(b) and shall meet the lighting control installation requirements in Section 130.4.
  5. If indicator lights are integral to a lighting control system, they shall consume no more than one watt of power per indicator light.

(b) All installed lighting control systems listed in Section 110.9(b) shall comply with the requirements listed below; and all components of the system considered together as installed shall meet all applicable requirements for the application for which they are installed as required in Sections 130.0 through 130.5, Sections 140.6 through 140.8, Section 141.0, and Section 150.0(k).

  1. Time-switch lighting controls.

    1. Automatic time-switch controls shall meet all requirements for automatic time switch control devices in the Title 20 Appliance Efficiency Regulations.
    2. Astronomical time-switch controls shall meet all requirements for astronomical time-switch control devices in the Title 20 Appliance Efficiency Regulations.
    3. Multilevel astronomical time-switch controls, in addition to meeting all of the requirements for astronomical time-switch controls, shall include at least two separately programmable steps per zone.
    4. Outdoor astronomical time-switch controls, in addition to meeting all of the requirements for astronomical time-switch controls, shall have setback functions that allow the lighting on each controlled channel to be switched or dimmed to lower levels. The set back functions shall be capable of being programmed by the user for at least one specific time of day.
  2. Daylighting controls.

    1. Automatic daylight controls shall meet all requirements for automatic daylight control devices in the Title 20 Appliance Efficiency Regulations.
    2. Photo controls shall meet all requirements for photo control devices in the Title 20 Appliance Efficiency Regulations.
  3. Dimmers shall meet all requirements for dimmer control devices in the Title 20 Appliance Efficiency Regulations.
  4. Occupant sensing controls: Occupant, motion and vacancy sensor controls shall meet the following requirements:

    1. Occupant sensors shall meet all applicable requirements for occupant sensor control devices in the Title 20 Appliance Efficiency Regulations.
    2. Motion sensors shall meet all applicable requirements for motion sensor controls devices in the Title 20 Appliance Efficiency Regulations.
    3. Vacancy sensors shall meet all applicable requirements for vacancy sensor controls devices in the Title 20 Appliance Efficiency Regulations.
    4. Partial-ON sensors shall meet all applicable requirements for partial on sensing devices in the Title 20 Appliance Efficiency Regulations.
    5. Partial-OFF sensors shall meet all applicable requirements for partial off sensing devices in the Title 20 Appliance Efficiency Regulations.
    6. All Occupant Sensing Control types shall be programmed to turn OFF all or part of the lighting no longer than 20 minutes after the space is vacated of occupants, except as specified by Section 130.1(c)8.

      Exception to Section 110.9(b)4: Occupant sensing control systems may consist of a combination of single or multilevel occupant, motion or vacancy sensor controls, provided that components installed to comply with manual-on requirements shall not be capable of conversion by the user from manual-on to automatic-on functionality.

  5. Part-night outdoor lighting controls, as defined in Section 100.1, shall meet all of the following requirements:

    1. Have sunrise and sunset prediction accuracy within +/- 15 minutes and timekeeping accuracy within five minutes per year; and
    2. Have the ability to setback or turn off lighting at night as required in Section 130.2(c), by means of a programmable timeclock or motion sensing device; and
    3. When controlled with a timeclock, shall be capable of being programmed to allow the setback or turning off of the lighting to occur from any time at night until any time in the morning, as determined by the user.

(c) Track lighting integral current limiter. An integral current limiter for line-voltage track lighting shall be recognized for compliance with Part 6 only if it meets all of the following requirements:

  1. Shall be certified to the Energy Commission as meeting all of the applicable requirements in Section 110.9(c); and
  2. Shall comply with the lighting control installation requirements in accordance with Section 130.4; and
  3. Shall be manufactured so that the current limiter housing is used exclusively on the same manufacturer’s track for which it is designed; and
  4. Shall be designed so that the current limiter housing is permanently attached to the track so that the system will be irreparably damaged if the current limiter housing were to be removed after installation into the track. Methods of attachment may include but are not limited to one-way barbs, rivets and one-way screws; and
  5. Shall employ tamper resistant fasteners for the cover to the wiring compartment; and
  6. Shall have the identical volt-ampere (VA) rating of the current limiter as installed and rated for compliance with Part 6 clearly marked as follows; and

    1. So that it is visible for the enforcement agency’s field inspection without opening coverplates, fixtures or panels; and
    2. Permanently marked on the circuit breaker; and
    3. On a factory-printed label that is permanently affixed to a nonremovable base-plate inside the wiring compartment.
  7. Shall have a conspicuous factory installed label permanently affixed to the inside of the wiring compartment warning against removing, tampering with, rewiring or bypassing the device; and
  8. Each electrical panel from which track lighting integral current limiters are energized shall have a factory printed label permanently affixed and prominently located, stating the following: “NOTICE: Current limiting devices installed in track lighting integral current limiters connected to this panel shall only be replaced with the same or lower amperage. Adding track or replacement of existing current limiters with higher continuous ampere rating will void the track lighting integral current limiter certification, and will require resubmittal of compliance documentation to the enforcement agency responsible for compliance with the California Title 24, Part 6 Building Energy Efficiency Standards.”

(d) Track lighting supplementary overcurrent protection panel. A Track Lighting Supplementary Overcurrent Protection Panel shall be used only for line-voltage track lighting and shall be recognized for compliance with Part 6 only if it meets all of the following requirements:

  1. Shall comply with the Lighting Control Installation requirements in accordance with Section 130.4; and
  2. Shall be listed as defined in Section 100.1; and
  3. Shall be used only for line voltage track lighting. No other lighting or building power shall be used in a Supplementary Overcurrent Protection Panel used to determine input wattage for track lighting; and
  4. Be permanently installed in an electrical equipment room, or permanently installed adjacent to the lighting panel board providing supplementary overcurrent protection for the track lighting circuits served by the supplementary over current protection pane; and
  5. Shall have a permanently installed label that is prominently located stating the following: “NOTICE: This Panel for Track Lighting Energy Code Compliance Only.” The overcurrent protection devices in this panel shall only be replaced with the same or lower amperage. No other overcurrent protective device shall be added to this panel. Adding to, or replacement of, existing overcurrent protective device(s) with higher continuous ampere rating will void the panel listing and require resubmittal of compliance documentation to the enforcement agency responsible for compliance with the California Title 24, Part 6 Building Energy Efficiency Standards.

(e) JA8 high efficacy light sources. To qualify as JA8 high efficacy light source for compliance with the residential lighting Standards in Section 150.0(k), a residential light source shall be certified to the Energy Commission according to Reference Joint Appendix JA-8. Nonresidential light sources are not required to be certified to the Energy Commission.

(f) Ballasts for residential recessed luminaires. To qualify as high efficacy for compliance with Section 150.0(k), any compact fluorescent lamp ballast in a residential recessed luminaire shall meet all of the following conditions:

  1. Be rated by the ballast manufacturer to have a minimum rated life of 30,000 hours when operated at or below a specified maximum case temperature. This maximum ballast case temperature specified by the ballast manufacturer shall not be exceeded when tested in accordance to UL 1598 Section 19.15; and
  2. Have a ballast factor of not less than 0.90 for nondimming ballasts and a ballast factor of not less than 0.85 for dimming ballasts.

(a) Covered occupancies.

  1. Single-family residences. Single-family residences located in subdivisions with ten or more single-family residences and where the application for a tentative subdivision map for the residences has been deemed complete by the enforcement agency shall comply with the requirements of Sections 110.10(b) through 110.10(e)
  2. Low-rise multifamily buildings. Low-rise multifamily buildings shall comply with the requirements of Sections 110.10(b) through 110.10(d).
  3. Hotel/motel occupancies and high-rise multifamily buildings. Hotel/motel occupancies and high-rise multifamily buildings with ten habitable stories or fewer shall comply with the requirements of Sections 110.10(b) through 110.10(d).
  4. All other nonresidential buildings. All other nonresidential buildings with three habitable stories or fewer shall comply with the requirements of Sections 110.10(b) through 110.10(d).

(b) Solar zone.

  1. Minimum area. The solar zone shall have a minimum total area as described below. The solar zone shall comply with access, pathway, smoke ventilation and spacing requirements as specified in Title 24, Part 9 or other Parts of Title 24 or in any requirements adopted by a local jurisdiction. The solar zone total area shall be comprised of areas that have no dimension less than five feet and are no less than 80 square feet each for buildings with roof areas less than or equal to 10,000 square feet or no less than 160 square feet each for buildings with roof areas greater than 10,000 square feet.

    1. Single-family residences. The solar zone shall be located on the roof or overhang of the building and have a total area no less than 250 square feet.

      Exception 1 to Section 110.10(b)1A: Single-family residences with a permanently installed solar electric system having a nameplate DC power rating, measured under Standard Test Conditions, of no less than 1000 watts.

      Exception 2 to Section 110.10(b)1A: Single-family residences with a permanently installed domestic solar water-heating system meeting the installation criteria specified in the Reference Residential Appendix RA4 and with a minimum solar savings fraction of 0.50.

      Exception 3 to Section 110.10(b)1A: Single-family residences with three habitable stories or more and with a total floor area less than or equal to 2000 square feet and having a solar zone total area no less than 150 square feet.

      Exception 4 to Section 110.10(b)1A: Single-family residences located in climate zones 8–14 and the Wildland-Urban Interface Fire Area as defined in Title 24, Part 2 and having a whole house fan and having a solar zone total area no less than 150 square feet.

      Exception 5 to Section 110.10(b)1A: Buildings with a designated solar zone area that is no less than 50 percent of the potential solar zone area. The potential solar zone area is the total area of any low-sloped roofs where the annual solar access is 70 percent or greater and any steep-sloped roofs oriented between 110 degrees and 270 degrees of true north where the annual solar access is 70 percent or greater. Solar access is the ratio of solar insolation including shade to the solar insolation without shade. Shading from obstructions located on the roof or any other part of the building shall not be included in the determination of annual solar access.

      Exception 6 to Section 110.10(b)1A: Single-family residences having a solar zone total area no less than 150 square feet and where all thermostats comply with Reference Joint Appendix JA5 and are capable of receiving and responding to Demand Response Signals prior to granting of an occupancy permit by the enforcing agency.

      Exception 7 to Section 110.10(b)1A: Single-family residences meeting the following conditions:

      1. All thermostats comply with Reference Joint Appendix JA5 and are capable of receiving and responding to Demand Response Signals prior to granting of an occupancy permit by the enforcing agency.
      2. Comply with one of the following measures:

        1. Install a dishwasher that meets or exceeds the ENERGY STAR® Program requirements with either a refrigerator that meets or exceeds the ENERGY STAR Program requirements or a whole house fan driven by an electronically commutated motor; or
        2. Install a home automation system capable of, at a minimum, controlling the appliances and lighting of the dwelling and responding to demand response signals; or
        3. Install alternative plumbing piping to permit the discharge from the clothes washer and all showers and bathtubs to be used for an irrigation system in compliance with the California Plumbing Code and any applicable local ordinances; or
        4. Install a rainwater catchment system designed to comply with the California Plumbing Code and any applicable local ordinances, and that uses rainwater flowing from at least 65 percent of the available roof area.
    2. Low-rise and high-rise multifamily buildings, hotel/motel occupancies and nonresidential buildings. The solar zone shall be located on the roof or overhang of the building or on the roof or overhang of another structure located within 250 feet of the building or on covered parking installed with the building project and have a total area no less than 15 percent of the total roof area of the building excluding any skylight area.

      Exception 1 to Section 110.10(b)1B: Buildings with a permanently installed solar electric system having a nameplate DC power rating, measured under Standard Test Conditions, of no less than one watt per square foot of roof area.

      Exception 2 to Section 110.10(b)1B: Buildings with a permanently installed domestic solar water-heating system complying with Section 150.1(c)8Ciii.

      Exception 3 to Section 110.10(b)1B: Buildings with a designated solar zone area that is no less than 50 percent of the potential solar zone area. The potential solar zone area is the total area of any low-sloped roofs where the annual solar access is 70 percent or greater and any steep-sloped roofs oriented between 110 degrees and 270 degrees of true north where the annual solar access is 70 percent or greater. Solar access is the ratio of solar insolation including shade to the solar insolation without shade. Shading from obstructions located on the roof or any other part of the building shall not be included in the determination of annual solar access.

      Exception 4 to Section 110.10(b)1B: Low-rise and high-rise multifamily buildings meeting the following conditions:

      1. All thermostats in each dwelling unit comply with Reference Joint Appendix JA5 and are capable of receiving and responding to Demand Response Signals prior to granting of an occupancy permit by the enforcing agency.
      2. In each dwelling unit, comply with one of the following measures:

        1. Install a dishwasher that meets or exceeds the ENERGY STAR Program requirements with either a refrigerator that meets or exceeds the ENERGY STAR Program requirements or a whole house fan driven by an electronically commutated motor; or
        2. Install a home automation system capable of, at a minimum, controlling the appliances and lighting of the dwelling and responding to demand response signals; or
        3. Install alternative plumbing piping to permit the discharge from the clothes washer and all showers and bathtubs to be used for an irrigation system in compliance with the California Plumbing Code and any applicable local ordinances; or
        4. Install a rainwater catchment system designed to comply with the California Plumbing Code and any applicable local ordinances, and that uses rainwater flowing from at least 65 percent of the available roof area.

      Exception 5 to Section 110.10(b)1B: Buildings where the roof is designed and approved to be used for vehicular traffic or parking or for a heliport.

  2. Orientation. All sections of the solar zone located on steep-sloped roofs shall be oriented between 110 degrees and 270 degrees of true north.
  3. Shading.

    1. No obstructions, including but not limited to, vents, chimneys, architectural features and roof mounted equipment, shall be located in the solar zone.
    2. Any obstruction, located on the roof or any other part of the building that projects above a solar zone shall be located at least twice the distance, measured in the horizontal plane, of the height difference between the highest point of the obstruction and the horizontal projection of the nearest point of the solar zone, measured in the vertical plane.

      Exception to Section 110.10(b)3: Any roof obstruction, located on the roof or any other part of the building, that is oriented north of all points on the solar zone.

  4. Structural design loads on construction documents. For areas of the roof designated as solar zone, the structural design loads for roof dead load and roof live load shall be clearly indicated on the construction documents.

    Note: Section 110.10(b)4 does not require the inclusion of any collateral loads for future solar energy systems.

(c) Interconnection pathways.

  1. The construction documents shall indicate a location for inverters and metering equipment and a pathway for routing of conduit from the solar zone to the point of interconnection with the electrical service. For single-family residences the point of interconnection will be the main service panel.
  2. The construction documents shall indicate a pathway for routing of plumbing from the solar zone to the water-heating system.

(d) Documentation. A copy of the construction documents or a comparable document indicating the information from Sections 110.10(b) through 110.10(c) shall be provided to the occupant.

(e) Main electrical service panel.

  1. The main electrical service panel shall have a minimum busbar rating of 200 amps.
  2. The main electrical service panel shall have a reserved space to allow for the installation of a double pole circuit breaker for a future solar electric installation.

    1. Location. The reserved space shall be positioned at the opposite (load) end from the input feeder location or main circuit location.
    2. Marking. The reserved space shall be permanently marked as “For Future Solar Electric.”

Certification by Manufacturers. Any electrical power distribution system equipment listed in this section may be installed only if the manufacture has certified to the Commission that the equipment complies with all the applicable requirements of this section.

(a) Low-voltage dry-type distribution transformer shall be certified by the Manufacturer as required by the Title 20 Appliance Efficiency Regulations.

EXCEPTION to Section 110.11(a):.

  1. autotransformer;
  2. drive (isolation) transformer;
  3. grounding transformer;
  4. machine-tool (control) transformer;
  5. nonventilated transformer;
  6. rectifier transformer;
  7. regulating transformer;
  8. sealed transformer;
  9. special-impedance transformer;
  10. testing transformer;
  11. transformer with tap range of 20 percent or more;
  12. uninterruptible power supply transformer; or
  13. welding transformer.
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