10.23. An outdoor pool used after sunset or an indoor pool must have(a) a lighting system which illuminates the underwater areas of the pool and also illuminates all parts of the deck and water surface with an illumination level of at leasti. 30 decalux, for an indoor swimming pool; and
ii. 10 decalux, for an outdoor swimming pool; and
(b) an emergency lighting system supplied by a generator or a recharging battery with an automatic relay to illuminate the bottom of the pool, the deck and the changing room for an average illumination of at least 1 decalux at floor level, the steps and water surface in case of a failure of the electric lighting power supply. Any self-contained emergency lighting units must comply with CSA Standard CSA C22.2 No. 141-M, “Unit Equipment for Emergency Lighting”.