I'm building a bathroom in my basement based on installed rough-ins. I shall
need lighting and a low output outlet (for toothbrush, hair dryer, etc.).
Is it allowed to use ONE circuit for both lighting and low output outlets? I
shall use a 15 amp breaker and wiring.
WRONG code requires dedicated, GFCI protected circuit for outlet, separte
from lighting. Lighting can be shared with other circuits but the outlet
must be dedicated (can have more than one outlet in the bathroom on that
Well at least that's what the electrical inspector told me when we did a
bathroom remodel in 2000. Someone else quoted the 2002 code elsewhere in
this thread, which seems to allow the single circuit -- so maybe they
relaxed the requirement?
On Thu, 22 Sep 2005 07:00:13 -0400, "RBM" <rbm2(remove
The rule for the last 2 cycles is you can use one 20a circuit to serve
all of the bathroom receptacle outlets in all bathrooms, (not picking
up the fart fan and light) or one 20a circuit to serve all the loads
in one bathroom.
Yes, you can use the same circut for the lights and outlets,
as long as that circut doesn't serve anything BUT that
bathroom. No, you can't use a 15-amp circut, it has to
be 20A. This has nothing to do with arc welders,
which typically pull 50-60A. It has to do with hair-dryers,
which frequently pull between 14 and 17 amps.
If you've got lights, exhaust fans, a hair-dryer, some electric
thingus to clean your contacts, a radio.. you can run up over
15A in a hurry.
supplies a single bathroom, outlets for other equipment within the same bathroom
shall be permitted to be supplied in accordance with 210.23(A)."
Translation: if you bump this up to a 20A circuit, it's permitted (subject to
whims of your local code, of course).
A hairdryer is not a "low-output" device. It's one of the single-most power
hungry devices you'll plug in to a household outlet -- more than your
washing machine, refrigerator, vacuum cleaner... Many pull 15A.
Why is doing the wiring? If you are then put in two lines.
If it was an electician and they wanted alot more for a second line...
You dont have enough space in your meter box then only put in one.
I personally used two lines in my bathroom. One
takes care of the lights (4 in the ceiling and 7 or 8 in the vanity)
also the exhaust fan.
The other is dedicated to JUST the outlet (20 amp gfci)
If you do the math its amazing how much power a simple hair dryer
can pull out of an outlet..... 110volts X 15amps = 1650 watts.
Many hair driers use more than that. (at least my wifes does) so
at 20 amps X 110volts we have 2200 watts.
It sucks if you have to do things over again down the road. I rather
just get it right once and forall.
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