Does this circuit have to be dedicated?

[crtemp]

I am wiring a garage that is a separate structure from the residence. It is going to have a very small bathroom in it. Just a toilet and sink. I know 210.11 (c)(3) says that in a dwelling unit I have to have a separate circuit for the bath plug or plugs. If this is just a garage can I just come off a 20 amp 120 volt circuit that will be supplying convenience outlets?

 

[GoldDigger]

If it is just a toilet room, it is not a bathroom under the NEC.
But, as pointed out below, the sink makes it a bathroom.
Tapatalk!

 

[infinity]

Since it has a toilet and a sink it is a bathroom by NEC definition. IMO you can use the same single garage circuit. This may apply:

210.23 Permissible Loads. In no case shall the load ex-
ceed the branch-circuit ampere rating. An individual branch
circuit shall be permitted to supply any load for which it is
rated. A branch circuit supplying two or more outlets or
receptacles shall supply only the loads specified according
to its size as specified in 210.23(A) through (D) and as
summarized in 210.24 and Table 210.24.
(A) 15- and 20-Ampere Branch Circuits. A 15- or 20-
ampere branch circuit shall be permitted to supply lighting
units or other utilization equipment, or a combination of
both, and shall comply with 210.23(A)(1) and (A)(2).
Exception: The small-appliance branch circuits, laundry
branch circuits, and bathroom branch circuits required in a
dwelling unit(s) by 210.11(C)(1), (C)(2), and (C)(3) shall
supply only the receptacle outlets specified in that section

 

[crtemp]

If it is just a toilet room, it is not a bathroom under the NEC.

Tapatalk!

This will have a sink and a toilet.

The NEC says this though.

Bathroom. An area including a basin with one or more of
the following: a toilet, a urinal, a tub, a shower, a bidet, or
similar plumbing fixtures.

 

[crtemp]

Since it has a toilet and a sink it is a bathroom by NEC definition. IMO you can use the same single garage circuit. This may apply:

Not sure if this is correct but does the 3 va per sq ft apply to garages? I thought garages and open porches were excluded from this. Do I just calculate each receptacle (yoke) as 180 va?

 

[infinity]

Not sure if this is correct but does the 3 va per sq ft apply to garages? I thought garages and open porches were excluded from this. Do I just calculate each receptacle (yoke) as 180 va?

What in Article 220 would require this?

 

[crtemp]

Do I just use the .5 va/sq ft from "Garages - commercial (storage)" in table 220.12 to calculate how many square feet a 20 amp 120 volt circuit can have on it?

 

[GoldDigger]

That does not sound like it applies to a residential garage, does it?

Tapatalk!

 

[crtemp]

I thought it meant a commercial garage or a garage used for storage

 

[GoldDigger]

It means a commercial garage used only for storing cars, as opposed to maintenance/repair.

Tapatalk!

 

[crtemp]

It means a commercial garage used only for storing cars, as opposed to maintenance/repair.

Tapatalk!

So is there no maximum of outlets I can chain together in a residential garage? None of the outlets serve any purpose yet so there is no way to know what the loads will be.

 

[jxofaltrds]

I am wiring a garage that is a separate structure from the residence. It is going to have a very small bathroom in it. Just a toilet and sink. I know 210.11 (c)(3) says that in a dwelling unit I have to have a separate circuit for the bath plug or plugs. If this is just a garage can I just come off a 20 amp 120 volt circuit that will be supplying convenience outlets?

Yes. It is not a dwelling unit.

Dwelling Unit. A single unit, providing complete and independent
living facilities for one or more persons, including
permanent provisions for living, sleeping, cooking, and
sanitation.

 

[infinity]

Here's the requirement for receptacles in SFD residential detached garages with electric power:

210.52(G) Basements, Garages, and Accessory Buildings. For
a one-family dwelling, the following provisions shall apply:
(1) At least one receptacle outlet, in addition to those for
specific equipment, shall be installed in each basement,
in each attached garage, and in each detached garage or
accessory building with electric power.