B-1.1, r. 3 - Safety Code

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352. The provisions of Sentences 3.2.4.19.(10) and (11) NBC 1995 am. Québec do not apply if the sound signal devices are connected to a class “A” circuit according to CAN/ULC-S524, Installation of Fire Alarm Systems.
O.C. 1263-2012, s. 1.