Canadian electrical code (Ontario) question.

[Jester]

Well I think I now have answers to all three of my original questions (Thanks everybody):

1) Can I use conventional (black, white, gnd) BX, red tape on the white wire to ID as hot conductor.    YES

2) Regarding the thermostat, the one I have has two poles, I have seen these connected two different ways in the past, method one, they switch two heaters, one on each pole. Method two they switch both poles to either one heater or two in parallel. Not sure what the code book says about this?  Must switch both poles

3) I have existing spare conventional 15A dual pole breakers in the panel, can I use these or are arc-fault breakers required?   Conventional breakers are OK


Not one of my original questions, but it did come up during the discussion regarding the neutral.......

Quote

    622-110 - Branch circuits which supply electric heaters may not be used to supply any other load.
    2-wire cables - electric heaters are usually connected for 240V - no connection to the neutral. Rule 4-034(1) permits a 2-wire loomex cable with one black and one white to be used for these loads. ... A little black or red tape on the exposed section of the white conductor.

[james_s]

Yes that sounds right. Here in the US arc fault breakers are required virtually everywhere now, Canadian code is broadly the same as the NEC but there are differences. Either way I think those things are more trouble than they're worth, I have NOT had a good experience with them.

[NorthGuy]

Yes that sounds right. Here in the US arc fault breakers are required virtually everywhere now.

I installed an arc-fault breaker once. It was tripping every time a dimmer is used, so I had to go back to normal breaker.

[Jester]

Yes that sounds right. Here in the US arc fault breakers are required virtually everywhere now.

I installed an arc-fault breaker once. It was tripping every time a dimmer is used, so I had to go back to normal breaker.

From what I have read the arc-fault legislation debacle was largely a solution looking for a problem introduced by a "stacked" committee represented by the circuit breaker manufacturers.