The Ontario Building Code | Electrical Supervision

3.2.4.10. Electrical Supervision

(1) Electrical supervision shall be provided for a fire alarm system.

(2) If a fire alarm system in a building is required by Sentence 3.2.4.9.(1) to have an annunciator, each valve controlling water supplies in a standpipe system, except for hose valves, shall be equipped with an electrically supervised switch for transmitting a trouble signal to the annunciator in the event of movement of the valve handle.

(3) If a fire alarm system is installed in a building, an automatic sprinkler system shall be electrically supervised to indicate a supervisory signal on the building fire alarm system annunciator for each of the following,

(a) movement of a valve handle that controls the supply of water to sprinklers,

(b) loss of excess water pressure required to prevent false alarms in a wet pipe system,

(c) loss of air pressure in a dry pipe system,

(d) loss of air pressure in a pressure tank,

(e) a significant change in water level in any water storage container used for firefighting purposes,

(f) loss of power to any automatically starting fire pump, and

(g) a temperature approaching the freezing point in any dry pipe valve enclosure or water storage container used for firefighting purposes.

(4) If a fire alarm system is installed in a building, a fire pump shall be electrically supervised in accordance with NFPA 20, "Installation of Stationary Pumps for Fire Protection".

(5) If a fire alarm system is required in a building, electrical supervision shall be provided to indicate, on the fire alarm system annunciator, a loss of power to a heat tracing cable that is installed to heat,

(a) a standpipe riser,

(b) a sprinkler line as part of a fire suppression system, or

(c) an exitor means of egress to keep it free of ice and snow.

(6) In a building regulated by the provisions of Subsection 3.2.6., the indication of a supervisory signal in accordance with Sentence (3) shall be transmitted to a proprietary control centre or to an independent central station.