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Old 04-27-2010, 02:23 PM   #1
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Mixing gauges of heater wire?


My electrician roughed in a heater feed wire to the area of my new office space. It looked red and I assumed it was 12 gauge. It is connected to 2 15 amp breakers on its own circuit on the main panel....just like all the other heater circuits in the house. However, it is pink and it is 14 gauge.

I know this is ok by the code (British Columbia) or he wouldn't have done it.

I plan to put 1500 W of heaters in the office space, but I went ahead and wired it with regular red 12 gauge wire, including the wire to the thermostat.

Is that a problem when I connect my wiring to the 14 gauge feeder?
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Old 04-27-2010, 03:12 PM   #2
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No problem as long as you keep the 15A breaker. There is situations when you can put #14 onto a 20A breaker for heat but to save you the confusion I will not go into it. Keept it a 15A breaker, make a note by the panel or in the junction box that there is #14 mixed in with it and not to bump the breaker size up.
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Old 04-27-2010, 04:29 PM   #3
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Thanks, Darren.
I was thinking just along those lines after reading a bit more in DIY posts about heaters around the web......eg. ok to use beefier wire as done to avoid voltage drops...just never use lighter wire.....and mixing seems not a problem, as you confirmed, as long as the one pays attention to the breaker rating.

And I guess if anyone should know about wiring up for heat it would be a Pegger.

oh my bad. Ok ok, it is pouring here on the Wet Coast.
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