"46erjoe" wrote in message
...
On 5 Dec 2006 12:31:38 -0800, "RayV" wrotF:


46erjoe wrote:
Can I use 12/2 wire for a 20 amp line?

Not if it is Al or Al Cu-clad.

I was going to use it in two places:

1) new bathroom where the ceiling light is also a fan and heater +
the light over the sink + the GFI outlets around the perimeter of the
room

2) in a new bedroom I'm adding on that will have a baseboard electric
heater + ceiling light + perimeter outlets.

Can I stay with 12/2 and 20 amp breaker or should I go 10/2? Does this
change your responses? Thanks.

Calculate the maximum current when all the loads are on. If it's more than
20 A, then go to 10 gage wire.