I have an electrical sub doing a small 100 amp service in a bunk house, He has 12/3 run to a bathroom exhauste fan. I know you can share a neutral thats fine, but is there NEC code regarding the use of a double pole breaker in the box to control two separate circuts? In other words he has the bathroom light run to one leg of the breaker and the fan to the other, should the breakers be independent of each other or is it ok that they are ganged?
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A single breaker should be enough for the whole bathroom, unless there is a heater or something. I'm surprised he has the light and fan on separate curcuits.
~ Ted W ~
Cheap Tools! - MyToolbox.net
See my work - TedsCarpentry.com
It depends on what version of the NEC is in force in your area.
If it's the the 2008 NEC, any multi-wire (shared neutral) branch circuit has to be protected by a two-pole breaker or common-trip breakers (i.e., adjacent single poles with an approved handle tie).
If the 2005 NEC or earlier, the legs of the multi-wire circuit can be on independent single-pole breakers, unless the two legs land on the same device (like a split duplex receptacle). Then a two-pole breaker, or a common-trip breaker, or a handle tie between the single pole breakers ,is required.
Capisco?
Cliff
If memory serves me, I belive a shared neutral has to be on a tied breaker.
Thanks for your input, the new electrical sub cleared things up today. I failed to mention it was a heat fan in my original post. The code here says the heat fan must be on a seprate circut. There were many other mistakes made by the sparky yesterday the breaker was the only one I wasnt sure on. I called his boss last night and informed him of my concerns about the sparky and his work and this morning they sent two guys out. They spent most of the day working away and that is more than i can say for the guy yesterday who was in his truck longer than he was in working or in his case screwing things up.
Ahhh... so the plot thins...
Yeah, I think a heat fan or any sort of hardwired heater requires a dedicated breaker almost anywhere. I once ran a dedicated circut to a bathroom so HO could use a portable space heater. ~ Ted W ~
Cheap Tools! - MyToolbox.netSee my work - TedsCarpentry.com