Heater controls installed in proximity to sinks, tubs, or shower stalls
1) A manually operated control for a heating device shall be located not less than 1 m from a sink (a wash basin complete with a drainpipe), tub, or shower stall, this distance being measured horizontally between the control and the sink, tub, or shower stall without piercing a wall, partition, or similar obstacle.
2) Notwithstanding Subrule 1), a manually operated control shall be permitted to be located less than 1 m from a sink (a wash basin complete with a drainpipe) and not less than 500 mm from a tub or shower stall, provided that it is
a) protected by a ground fault circuit interrupter of the Class A type; or
b) supplied by an extra-low-voltage Class 2 circuit.
Source: Rule 62-130, CSA C22.1:21, Canadian Electrical Code, Part 1 (25th Edition), Safety Standard for Electrical Installations. © 2021 Canadian Standards Association. Please visit store.csagroup.org