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C405.4 Exterior lighting power requirements (Mandatory)

2018 Philadelphia Energy Conservation Code > 4 [CE] Commercial Energy Efficiency > C405 Electrical Power and Lighting Systems > C405.4 Exterior lighting power requirements (Mandatory)
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The total connected exterior lighting power calculated in accordance with Section C405.4.1 shall be not greater than the exterior lighting power allowance calculated in accordance with Section C405.4.2.

C405.4.1 Total connected exterior building exterior lighting power

The total exterior connected lighting power shall be the total maximum rated wattage of all lighting that is powered through the energy service for the building.

Exception: Lighting used for the following applications shall not be included.

  1. Lighting approved because of safety considerations.
  2. Emergency lighting automatically off during normal business operation.
  3. Exit signs.
  4. Specialized signal, directional and marker lighting associated with transportation.
  5. Advertising signage or directional signage.
  6. Integral to equipment or instrumentation and installed by its manufacturer.
  7. Theatrical purposes, including performance, stage, film production and video production.
  8. Athletic playing areas.
  9. Temporary lighting.
  10. Industrial production, material handling, transportation sites and associated storage areas.
  11. Theme elements in theme/amusement parks.
  12. Used to highlight features of art, public monuments, and the national flag.
  13. Lighting for water features and swimming pools.
  14. Lighting controlled from within dwelling units, where the lighting complies with Section R404.1.

C405.4.2 Exterior lighting power allowance

The total exterior lighting power allowance is the sum of the base site allowance plus the individual allowances for areas that are to be illuminated by lighting that is powered through the energy service for the building. Lighting power allowances are as specified in Table C405.4.2(2). The lighting zone for the building exterior is determined in accordance with Table C405.4.2(1) unless otherwise specified by the code official.

TABLE C405.4.2(1)

EXTERIOR LIGHTING ZONES

LIGHTING
ZONE
DESCRIPTION
1Developed areas of national parks, state parks, forest
land, and rural areas
2Areas predominantly consisting of residential zoning,
neighborhood business districts, light industrial with
limited nighttime use and residential mixed-use areas
3All other areas not classified as lighting zone 1, 2 or 4
4High-activity commercial districts in major metropolitan
areas as designated by the local land use planning
authority

TABLE C405.4.2(2)

LIGHTING POWER ALLOWANCES FOR BUILDING EXTERIORS

    LIGHTING ZONES
  Zone 1 Zone 2 Zone 3 Zone 4
  Base Site Allowance 350 W 400 W 500 W 900 W
  Uncovered Parking Areas
  Parking areas and drives 0.03W/ft2 0.04 W/ft2 0.06 W/ft2 0.08 W/ft2
  Building Grounds
  Walkways and ramps less
than 10 feet wide
 0.5 W/linear foot 0.5 W/linear foot 0.6 W/linear foot 0.7 W/linear foot
  Walkways and ramps 10
feet wide or greater,
plaza areas, special
feature areas
 0.10 W/ft2 0.10 W/ft2 0.11 W/ft2 0.14 W/ft2
  Dining areas 0.65 W/ft2 0.65 W/ft2 0.75 W/ft2 0.95 W/ft2
  Stairways 0.6 W/ft2 0.7 W/ft2 0.7 W/ft2 0.7 W/ft2
  Pedestrian tunnels 0.12 W/ft2 0.12 W/ft2 0.14 W/ft2 0.21 W/ft2
  Landscaping 0.03 W/ft2 0.04 W/ft2 0.04 W/ft2 0.04 W/ft2
  Building Entrances and Exits
  Pedestrian and vehicular
entrances and exits
 14 W/linear foot
of opening
 14 W/linear foot
of opening
 21 W/linear foot
of opening
 21 W/linear foot
of opening
  Entry canopies 0.20 W/ft2 0.25 W/ft2 0.4 W/ft2 0.4 W/ft2
  Loading docks 0.35 W/ft2 0.35 W/ft2 0.35 W/ft2 0.35 W/ft2
  Sales Canopies
  Free-standing and
attached
 0.40 W/ft2 0.40 W/ft2 0.6 W/ft2 0.7 W/ft2
  Outdoor Sales
  Open areas (including
vehicle sales lots)
 0.20 W/ft2 0.20 W/ft2 0.35 W/ft2 0.50 W/ft2
  Street frontage for
vehicle sales lots in
addition to “open area”
allowance
 No allowance 7 W/linear foot 7 W/linear foot 21 W/linear foot

For SI: 1 foot = 304.8 mm, 1 watt per square foot = W/0.0929 m2.

W = watts.

TABLE C405.4.2(3)

INDIVIDUAL LIGHTING POWER ALLOWANCES FOR BUILDING EXTERIORS

LIGHTING ZONES
Zone 1Zone 2Zone 3Zone 4
Building facadesNo allowance0.075 W/ft2 of gross
above-grade wall area
0.113 W/ft2 of gross
above-grade wall area
0.15 W/ft2 of gross
above-grade wall area
Automated teller machines (ATM) and
night depositories
135 W per location plus 45 W per additional ATM per location
Uncovered entrances and gatehouse
inspection stations at guarded facilities
0.5 W/ft2 of area
Uncovered loading areas for law
enforcement, fire, ambulance and other
emergency service vehicles
0.35 W/ft2 of area
Drive-up windows and doors200 W per drive through
Parking near 24-hour retail entrances.400 W per main entry

For SI: For SI: 1 watt per square foot = W/0.0929 m2.

W = watts.

C405.4.2.1 Additional exterior lighting power

Any increase in the exterior lighting power allowance is limited to the specific lighting applications indicated in Table C405.4.2(3). The additional power shall be used only for the luminaires that are serving these applications and shall not be used for any other purpose.

C405.4.3 Gas lighting (Mandatory)

Gas-fired lighting appliances shall not be equipped with continuously burning pilot ignition systems.
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