On Jun 3, 2:14*pm, Bill McKenzie wrote:
On Jun 3, 10:20*am, bud-- wrote:





N8N wrote:
12/2. You'll run three hots and two neutrals, plus grounds.

I'm curious if he really has 10/2; wouldn't that be unusual for a
bathroom which I would assume would be a 20A dedicated branch circuit
(hopefully GFCI protected?)

10/2 does sound odd.

Also, I *thought* but may be mistaken - someone correct me if I am -
that current code prohibited using two different size wires on a given
branch circuit, even if the smaller size used was appropriate for the
overcurrent protection device.

You can use any size wire as long as the overcurrent protection is for
the smallest branch circuit wire.

Mixing may or may not be a good idea. It can cause confusion. But on a
20A circuit you might run #10 to a garage for voltage drop and #12
within the garage.

--
bud--

One more thing. *How can it be both dedicated and GFCI protected? *Is
there a standalone interrupt/reset somewhere? *There is a GFCI-
protected plug in the bathroom, but I'm assuming its a different
circuit. *And I guess current code may not be relevant, since this was
all done in the 70s.- Hide quoted text -


There's an either/or in the code; if the GFCI outlet is on a 20A
circuit that is only used for bathrooms, the lights etc. can be on
another circuit. However if the fan is in the shower area it also
must be GFCI protected.

rather than crawl around the attic, why not just get some scraps of
12AWG and 14AWG and see if they match the sizes of the wires in the
box? I suspect you will find that the larger cable is 12AWG in which
case I would replace the 14/2 with a 12/3.

nate