3.2.7.3.Emergency Lighting

(1) Emergency lighting shall be provided to an average level of illumination not less than 10 lx at floor or tread level in (a) exits, (b) principal routes providing access to exit in open floor areas and in service rooms, (c) corridors used by the public, (d) corridors serving patients’ or residents’ sleeping rooms in a Group B, Division 2 or 3 occupancy, (e) reserved, (f) corridors serving classrooms, (g) underground walkways, (h) public corridors, (i) floor areas or parts of thereof where the public may congregate (i) in Group A, Division 1 occupancies, or (ii) in Group A, Divisions 2 and 3 occupancies having an occupant load of 60 or more, (j) floor areas or parts of thereof in day care centres where persons are cared for, (k) food preparation areas in commercial kitchens, (l) washrooms with fixtures for public use, (m) locations where doors are equipped with an electromagnetic lock as described in Clauses 3.4.6.16.(5)(k), (n) universal washrooms required by Article 3.8.3.12. and universal shower rooms required by Article 3.8.3.13., (o) principal routes providing access to exit in a floor area that is not subdivided into rooms or suites of rooms served by corridors in a business and personal services occupancy, a mercantile occupancy or an industrial occupancy, and (p) internal corridors or aisles serving as principal routes to exits in a business and personal services occupancy, a mercantile occupancy or an industrial occupancy that is subdivided into rooms or suites of rooms, and is not served by a public corridor. (2) Emergency lighting to provide an average level of illumination of not less than 10 lx at floor or catwalk level shall be included (a) in a service space referred to in Sentence 3.2.1.1.(8), and (b) on a shelf and rack storage system, in locations described in Sentence 3.16.1.5.(2). (3) The minimum value of the illumination required by Sentences (1) and (2) shall not be less than 1 lx. (4) In addition to the requirements of Sentences (1) to (3), the installation of battery-operated emergency lighting in health care facilities shall conform to the appropriate requirements of CSA Z32, “Electrical safety and essential electrical systems in health care facilities.”