In Plain Language

This clause requires the fire alarm system to have an emergency power supply that conforms to Article 3.2.7.8, ensuring the alarm keeps working if normal power is lost.

This is a plain-language summary of the 2012/2017 Ontario Building Code text above, for general understanding only and not a substitute for the Code. Always confirm current requirements against the 2024 edition (O.Reg. 163/24) or a qualified professional before construction.