Lighting Control Requirements for ECBC Compliance
Lighting systems and equipment shall comply with the mandatory provisions of table 6.2 and the prescriptive criteria of table 6.3 from ECBC 2017. The lighting requirements in this sections applies to the following:
(a) Interior spaces of buildings,
(b) Exterior building features, including facades, illuminated roofs, architectural features, entrances, exits, loading docks, and illuminated canopies, and,
(c) Exterior building grounds lighting that is provided through the building’s electrical service.
Lighting Controls
(a) 90% of interior lighting fittings in building or space of building larger than 300 m2 shall be equipped with automatic control device.
(b) Additionally, occupancy sensors shall be provided in
i. All building types greater than 20,000 m2 BUA, in
a. All habitable spaces less than 30 m2, enclosed by walls or ceiling height partitions.
b. All storage or utility spaces more than 15 m2 in all building types with BUA greater than 20,000 m2.
c. Public toilets more than 25 m2, controlling at least 80 % of lighting fitted in the toilet. The lighting fixtures, not controlled by automatic lighting shutoff, shall be uniformly spread in the area.
ii. In corridors of all Hospitality greater than 20,000 m2 BUA, controlling minimum 70% and maximum 80% of lighting fitted in the public corridor. The lighting fixtures, not controlled by automatic lighting shut off, shall be uniformly spread in the area.
iii. In all Business and all conference or meeting rooms.
(c) Automatic control device shall function on either:
Space Control
Each space enclosed by ceiling-height partitions shall have at least one control device to independently control the general lighting within the space. Each control device shall be activated either manually by an occupant or automatically by sensing an occupant. Each control device shall
(a) control a maximum of 250 m2 for a space less than or equal to 1,000 m2, and a maximum of 1,000 m2 for a space greater than 1,000 m2.
(b) have the capability to override the shutoff control required in table 6.2.1.1 for no more than 2 hours, and
(c) be readily accessible and located so the occupants can see the control.
Control in Daylit Areas
(a) Luminaires, installed within day lighting extent from the window as calculated in table 4.2.3, shall be equipped with either a manual control device to shut off luminaires, installed within day lit area, during potential daylit time of a day or automatic control device that:
i. Has a delay of minimum 5 minutes, or,
ii. Can dim or step down to 50% of total power.
(b) Overrides to the daylight controls shall not be allowed.
(c) For SuperECBC Buildings, Lighting Power Density adjustment factor of 20% shall be allowed to all spaces with more than 70% of their area under daylight controls.
Exterior Lighting Control
(a) Lighting for all exterior applications not exempted in table 6.3.5 shall be controlled by a photo sensor or astronomical time switch that is capable of automatically turning off the exterior lighting when daylight is available or the lighting is not required.
(b) Lighting for all exterior applications, of Schools and Business with built up area greater than 20,000 m2, shall have lamp efficacy not less than 80 lumens per watt, 90 lumens per watt, and 100 lumens per watt, for ECBC, ECBC+, and SuperECBC Buildings respectively, unless the luminaire is controlled by a motion sensor or exempt under table 6.1 from ECBC 2017.
(c) Façade lighting and façade non-emergency signage of Shopping Complexes shall have separate time switches.