Heads up: There are no amended sections in this chapter.

This section applies only to the equipment described below.

Other equipment installed in new buildings shall comply with the requirements of this section.

Other equipment installed in additions to existing buildings shall comply with the requirements of this section.

Alterations to other building service equipment or systems shall comply with the requirements of this section applicable to those specific portions of the building and its systems that are being altered.

Any new equipment subject to the requirements of this section that is installed in conjunction with the alterations as a direct replacement of existing equipment or control devices shall comply with the specific requirements applicable to that equipment or control devices.

Exception to 10.1.1.3.2

Compliance shall not be required for the relocation or reuse of existing equipment.

Compliance with Section 10 shall be achieved by meeting all requirements of Section 10.1, "General"; Section 10.4, "Mandatory Provisions"; and Section 10.8, "Product Information."

Projects using the Energy Cost Budget Method (Section 11 of this standard) must comply with Section 10.4, the mandatory provisions of this section, as a portion of that compliance path.

Electric motors manufactured alone or as a component of another piece of equipment with a rated motor power of 1 hp or more, and less than or equal to 200 hp, shall comply with the requirements shown in Table 10.8-1 for NEMA Design A motors, NEMA Design B motors, and 1EC Design N motors, and Table 10.8-2 for NEMA Design C motors and IEC Design H motors.

General purpose small electric motors with an rated motor power of 0.25 hp or more, and less than or equal to 3 hp, shall have a minimum average full-load efficiency that is not less than as shown in Table 10.8-3 for polyphase small electric motors and Table 10.8-4 for capacitor-start capacitor-run small electric motors and capacitor-start induction-run small electric motors.

Fire pump electric motors shall have a minimum nominal full-load efficiency that is not less than that shown in Table 10.8-5.

Exception to 10.4.1

The standards in this section do not apply to the following exempt electric motors:

  1. Air-over electric motors.
  2. Component sets of an electric motor.
  3. Liquid-cooled electric motors.
  4. Submersible electric motors.
  5. Inverter-only electric motors.

Service water pressure-booster systems shall be designed such that the following apply:

  1. One or more pressure sensors shall be used to vary pump speed and/or start and stop pumps. The sensors shall either be located near the critical fixtures that determine the pressure required, or logic shall be employed that adjusts the set point to simulate operation of remote sensors.
  2. No devices shall be installed for the purpose of reducing the pressure of all of the water supplied by any booster system pump or booster system, except for safety devices.
  3. No booster system pumps shall operate when there is no service water flow.

Elevator systems shall comply with the requirements of this section.

For the luminaires in each elevator cab, not including signals and displays, the sum of the lumens divided by the sum of the watts (as described in Section 9.1.4) shall be no less than 35 lm/W.

Cab ventilation fans for elevators without air conditioning shall not consume over 0.33 W/cfm at maximum speed.

When stopped and unoccupied with doors closed for over 15 minutes, cab interior lighting and ventilation shall be de-energized until required for operation.

Design documents shall list the following for new elevators:

  1. Usage category as defined in ISO 25745-2 between 1 and 6.
  2. Energy efficiency classes A through G per ISO 25745-2, Table 7.

Escalators and moving walks shall automatically slow to the minimum permitted speed in accordance with ASME A17.1/CSA B44 or applicable local code when not conveying passengers.

Measurement devices shall be installed at the building site to monitor the energy use of each new building.

Measurement devices shall be installed to monitor the building use of the following types of energy supplied by a utility, energy provider, or plant that is not within the building:

  1. Natural gas.
  2. Fuel oil.
  3. Propane.
  4. Steam.
  5. Chilled water.
  6. Hot water.

The energy use of each building on the building site shall be recorded at a minimum of every 60 minutes and reported at least hourly, daily, monthly, and annually. The system shall be capable of maintaining all data collected for a minimum of 36 months and creating user reports showing at least hourly, daily, monthly, and annual energy consumption and demand.

Exceptions to 10.4.5.1 and 10.4.5.2

  1. Buildings or additions less than 25,000 ft2.
  2. Individual tenant spaces less than 10,000 ft2.
  3. Dwelling units.
  4. Residential buildings with less than 10,000 ft2 of common area.
  5. Fuel used for on-site emergency equipment.
(Not Used)

Table 10.8-1 Minimum Nominal Full-Load Efficiency for NEMA Design A, NEMA Design B, and IEC Design N Motors (Excluding Fire Pump Electric Motors) at 60 Hza,b

Motor Horsepower, hp (kW) Nominal Full-Load Efficiency, %
2-Pole 4-Pole 6-Pole 8-Pole
Enclosed Open Enclosed Open Enclosed Open Enclosed Open
1 (0.75) 77.0 77.0 85.5 85.5 82.5 82.5 75.5 75.5
1.5 (1.1) 84.0 84.0 86.5 86.5 87.5 86.5 78.5 77.0
2 (1.5) 85.5 85.5 86.5 86.5 88.5 87.5 84.0 86.5
3 (2.2) 86.5 85.5 89.5 89.5 89.5 88.5 85.5 87.5
5 (3.7) 88.5 86.5 89.5 89.5 89.5 89.5 86.5 88.5
7.5 (5.5) 89.5 88.5 91.7 91.0 91.0 90.2 86.5 89.5
10 (7.5) 90.2 89.5 91.7 91.7 91.0 91.7 89.5 90.2
15 (11) 91.0 90.2 92.4 93.0 91.7 91.7 89.5 90.2
20 (15) 91.0 91.0 93.0 93.0 91.7 92.4 90.2 91.0
25 (18.5) 91.7 91.7 93.6 93.6 93.0 93.0 90.2 91.0
30 (22) 91.7 91.7 93.6 94.1 93.0 93.6 91.7 91.7
40 (30) 92.4 92.4 94.1 94.1 94.1 94.1 91.7 91.7
50 (37) 93.0 93.0 94.5 94.5 94.1 94.1 92.4 92.4
60 (45) 93.6 93.6 95.0 95.0 94.5 94.5 92.4 93.0
75 (55) 93.6 93.6 95.4 95.0 94.5 94.5 93.6 94.1
100 (75) 94.1 93.6 95.4 95.4 95.0 95.0 93.6 94.1
125 (90) 95.0 94.1 95.4 95.4 95.0 95.0 94.1 94.1
150 (110) 95.0 94.1 95.8 95.8 95.8 95.4 94.1 94.1
200 (150) 95.4 95.0 96.2 95.8 95.8 95.4 94.5 94.1
250 (186) 95.8 95.0 96.2 95.8 95.8 95.8 95.0 95.0
300 (224) 95.8 95.4 96.2 95.8 95.8 95.8    
350 (261) 95.8 95.4 96.2 95.8 95.8 95.8    
400 (298) 95.8 95.8 96.2 95.8        
450 (336) 95.8 96.2 96.2 96.2        
500 (373) 95.8 96.2 96.2 96.2        

a. Nominal efficiencies shall be established in accordance with DOE 10 CFR 431.

b. For purposes of determining the required minimum nominal full-load efficiency of an electric motor that has a horsepower or kilowatt rating between two horsepower or two kilowatt ratings listed in this table, each such motor shall be deemed to have a listed horsepower or kilowatt rating, determined as follows:

1. A horsepower at or above the midpoint between the two consecutive horsepowers shall be rounded up to the higher of the two horsepowers.

2. A horsepower below the midpoint between the two consecutive horsepowers shall be rounded down to the lower of the two horsepowers.

3. A kilowatt rating shall be directly converted from kilowatts to horsepower using the formula 1 kilowatt = (1/0.746) horsepower. The conversion should be calculated to three significant decimal places, and the resulting horsepower shall be rounded in accordance with paragraph (1) or (2), whichever applies.

Table 10.8-2 Minimum Nominal Full-Load Efficiency for NEMA Design C and IEC Design H Motors at 60 Hza,b

Motor Horsepower, hp (kW) Nominal Full-Load Efficiency, %
4-Pole 6-Pole 6-Pole
Enclosed Open Enclosed Open Enclosed Open
1 (0.75) 85.5 85.5 82.5 82.5 75.5 75.5
1.5 (1.1) 86.5 86.5 87.5 86.5 78.5 77.0
2 (1.5) 86.5 86.5 88.5 87.5 84.0 86.5
3 (2.2) 89.5 89.5 89.5 88.5 85.5 87.5
5 (3.7) 89.5 89.5 89.5 89.5 86.5 88.5
7.5 (5.5) 91.7 91.0 91.0 90.2 86.5 89.5
10 (7.5) 91.7 91.7 91.0 91.7 89.5 90.2
15 (11) 92.4 93.0 91.7 91.7 89.5 90.2
20 (15) 93.0 93.0 91.7 92.4 90.2 91.0
25 (18.5) 93.6 93.6 93.0 93.0 90.2 91.0
30 (22) 93.6 94.1 93.0 93.6 91.7 91.7
40 (30) 94.1 94.1 94.1 94.1 91.7 91.7
50 (37) 94.5 94.5 94.1 94.1 92.4 92.4
60 (45) 95.0 95.0 94.5 94.5 92.4 93.0
75 (55) 95.4 95.0 94.5 94.5 93.6 94.1
100 (75) 95.4 95.4 95.0 95.0 93.6 94.1
125 (90) 95.4 95.4 95.0 95.0 94.1 94.1
150 (110) 95.8 95.8 95.8 95.4 94.1 94.1
200 (150) 96.2 95.8 95.8 95.4 94.5 94.1

a. Nominal efficiencies shall be established in accordance with DOE 10 CFR 431.

b. For purposes of determining the required minimum nominal full-load efficiency of an electric motor that has a horsepower or kilowatt rating between two horsepower or two kilowatt ratings listed in this table, each such motor shall be deemed to have a listed horsepower or kilowatt rating, determined as follows:

1. A horsepower at or above the midpoint between the two consecutive horsepowers shall be rounded up to the higher of the two horsepowers.

2. A horsepower below the midpoint between the two consecutive horsepowers shall be rounded down to the lower of the two horsepowers.

3. A kilowatt rating shall be directly converted from kilowatts to horsepower using the formula 1 kilowatt = (1/0.746) horsepower. The conversion should be calculated to three significant decimal places, and the resulting horsepower shall be rounded in accordance with paragraph (1) or (2), whichever applies.

Table 10.8-3 Minimum Average Full-Load Efficiency for Polyphase Small Electric Motorsa

Number of Poles ⇒ Full-Load Efficiency, %
Open Motors
2 4 6
Synchronous Speed (RPM) ⇒ 3600 1800 1200
Motor Size, hp
0.25 65.6 69.5 67.5
0.33 69.5 73.4 71.4
0.50 73.4 78.2 75.3
0.75 76.8 81.1 81.7
1 77.0 83.5 82.5
1.5 84.0 86.5 83.8
2 85.5 86.5 N/A
3 85.5 86.9 N/A

a. Average full-load efficiencies shall be established in accordance with 10 CFR 431.

Table 10.8-4 Minimum Average Full-Load Efficiency for Capacitor-Start Capacitor-Run and Capacitor-Start Induction-Run Small Electric Motorsa

Number of Poles ⇒ Full-Load Efficiency, %
Open Motors
2 4 6
Synchronous Speed (RPM) ⇒ 3600 1800 1200
Motor Size, hp
0.25 66.6 68.5 62.2
0.33 70.5 72.4 66.6
0.50 72.4 76.2 76.2
0.75 76.2 81.8 80.2
1 80.4 82.6 81.1
1.5 81.5 83.8 N/A
2 82.9 84.5 N/A
3 84.1 N/A N/A

a. Average full-load efficiencies shall be established in accordance with 10 CFR 431.

Table 10.8-5 Minimum Nominal Full-Load Efficiency for Fire Pump Electric Motorsa

Number of Poles ⇒ Full-Load Efficiency, %
Open Drip-Proof Motors Totally Enclosed Fan-Cooled Motors
2 4 6 8 2 4 6 8
Synchronous Speed (RPM) ⇒ 3600 1800 1200 900 3600 1800 1200 900
Motor Size, hp
1 NR 82.5 80.0 74.0 75.5 82.5 80.0 74.0
1.5 82.5 84.0 84.0 75.5 82.5 84.0 85.5 77.0
2 84.0 84.0 85.5 85.5 84.0 84.0 86.5 82.5
3 84.0 86.5 86.5 86.5 85.5 87.5 87.5 84.0
5 85.5 87.5 87.5 87.5 87.5 87.5 87.5 85.5
7.5 87.5 88.5 88.5 88.5 88.5 89.5 89.5 85.5
10 88.5 89.5 90.2 89.5 89.5 89.5 89.5 88.5
15 89.5 91.0 90.2 89.5 90.2 91.0 90.2 88.5
20 90.2 91.0 91.0 90.2 90.2 91.0 90.2 89.5
25 91.0 91.7 91.7 90.2 91.0 92.4 91.7 89.5
30 91.0 92.4 92.4 91.0 91.0 92.4 91.7 91.0
40 91.7 93.0 93.0 91.0 91.7 93.0 93.0 91.0
50 92.4 93.0 93.0 91.7 92.4 93.0 93.0 91.7
60 93.0 93.6 93.6 92.4 93.0 93.6 93.6 91.7
75 93.0 94.1 93.6 93.6 93.0 94.1 93.6 93.0
100 93.0 94.1 94.1 93.6 93.6 94.5 94.1 93.0
125 93.6 94.5 94.1 93.6 94.5 94.5 94.1 93.6
150 93.6 95.0 94.5 93.6 94.5 95.0 95.0 93.6
200 94.5 95.0 94.5 93.6 95.0 95.0 95.0 94.1
250 94.5 95.4 95.4 94.5 95.4 95.0 95.0 94.5
300 95.0 95.4 95.4 NR 95.4 95.4 95.0 NR
350 95.0 95.4 95.4 NR 95.4 95.4 95.0 NR
400 95.4 95.4 NR NR 95.4 95.4 NR NR
450 95.8 95.8 NR NR 95.4 95.4 NR NR
500 95.8 95.8 NR NR 95.4 95.8 NR NR

a. Nominal efficiencies shall be established in accordance with DOE 10 CFR 431.

b. For purposes of determining the required minimum nominal full-load efficiency of an electric motor that has a horsepower or kilowatt rating between two horsepower or two kilowatt ratings listed in this table, each such motor shall be deemed to have a listed horsepower or kilowatt rating, determined as follows:

1. A horsepower at or above the midpoint between the two consecutive horsepowers shall be rounded up to the higher of the two horsepowers.

2. A horsepower below the midpoint between the two consecutive horsepowers shall be rounded down to the lower of the two horsepowers.

3. A kilowatt rating shall be directly converted from kilowatts to horsepower using the formula 1 kilowatt = (1/0.746) horsepower. The conversion should be calculated to three significant decimal places, and the resulting horsepower shall be rounded in accordance with paragraph (1) or (2), whichever applies.

NR—No requirement

 

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