(1) Emergency lighting shall be provided in,
(a) exits,
(b) principal routes providing access to exit in an open floor area,
(c) corridors used by the public,
(d) underground walkways, and
(e) public corridors.
(2) Emergency lighting required in Sentence (1) shall be provided from a source of energy separate from the electrical supply for the building.
(3) Lighting required in Sentence (1) shall be designed to be automatically actuated for a period of not less than 30 min when the electric lighting in the affected area is interrupted.
(4) Illumination from lighting required in Sentence (1) shall be provided to average levels of not less than 10 lx at floor or tread level.
(5) The minimum value of the illumination required by Sentence (4) shall be not less than 1 1x.
(6) Where incandescent lighting is provided, lighting equal to 1 W/m² of floor area shall be considered to meet the requirement in Sentence (4).
(7) Where self-contained emergency lighting units are used, they shall conform to CSA C22.2 No. 141, “Emergency Lighting Equipment”.