Adding Fireplace heater
Has anyone added a fireplace heater? Thinking of doing it in my MH I have room under the TV I just don't if it worth the $500 or so price tag. I would have to run a dedicated 15a outlet but that shoul...
Forum Discussion
MrWizard wrote:
but you have your statement backwards
it is Against code to use a breaker that is larger rating than the wire can handle
Yes, in most cases the breaker cannot be larger than the wire rating, but not always.
For motors (not fractional HP) a breaker is typically rated more than the wire rating to allow for starting current (look at an RV AC unit). Same for capacitors, tap conductors and when rounding up to the next nearest standard breaker size. The NEC allows 15 amp receptacles to be supplied by a 20 amp circuit (table 210.21(B)(2)) which is a bit of an odd one, esp. when you could be using an extension cord with a multi-outlet end on it.
10+ years ago, the rules in the CEC for fixed heating loads were changed and heating loads are now considered continuous compared to loads on receptacle circuits which vary and are unpredictable. In the CEC, you are now permitted to have a #14 wire and 20 amp breaker for a fixed heating load (max. 1800 watts @ 120V). Maybe this is one of those rules where the NEC and CEC are still different.
FWIW, some household appliances are occasionally rated higher than 1500 watts such an 1800 watt hair/blow dryer and induction countertop burner for ex. Whether they actually draw 15 amps at 120 volts might be a question though.
The bottom line is that any electrical mods. should follow the current edition of the electrical code (NEC or CEC) and devices, material and components and also portable appliances should have the appropriate safety certification like UL, CSA, etc.
