Wiring residential garage

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mkgrady

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How many branch circuits do I need to wire this two car attached garage? Assume 2014 nec

A 2 garage door openers
B Two outdoor receptacles
C Two indoor Receptacles
D Two overhead lights

Obviously everything would work just fine on one circuit but I'm confused about how many nec requires.
 
As you know, I'd have to have the motor specs.
Your right, It could be a very large door for a Striper fishing boat. ;) Who, knows.
I was just going by the most common residential doors.
 
I agree with the 2 doors on one 20 amp circuit and the rest can be on another circuit but I would use 20 amps on that also. I would also put the lights on another 15 amp circuit especially if there are floods outside etc.
 
}}I agree with the 2 doors on one 20 amp circuit and the rest can be on another circuit but I would use 20 amps on that also. I would also put the lights on another 15 amp circuit especially if there are floods outside etc. {{

I thought that the outside plugs had to be on a different circuit than the garage circuits?
 
The outside outlets, , they can be on with a general use circuit.
The OP was asking for a code compliant install. IMO that would be the minimum. Most of us would not use the minimum. Lots of contractors do.
 
Buck Parrish said:
The outside outlets, , they can be on with a general use circuit.
The OP was asking for a code compliant install. IMO that would be the minimum. Most of us would not use the minimum. Lots of contractors do.
Click to expand...
But under the latest code that general purpose circuit cannot be the same one which supplies required receptacles inside the garage, yes?
 
I'm confused by 210.52 G (1). It says ( I think) the circuit feeding the recepts can not feed anything outside the garage.

So how can the inside the garage recepts circuit also feed outside the garage Recepts. I'm also confused about whether or not the lighting can be on the same circuit as the garage recepts. It makes it sound like garage recepts are a dedicated circuit sort of like a bathroom recept circuit.

So if we stipulate that the two GDO require a separate circuit, and the rest can be on another circuit what is the meaning of 210. 52 G (1)?
 
by 210.52 G (1).

That's new to me. Also apparently new to 2014. I stand corrected.
In that case 3 circuits may be required . But the outside outlets can still be on general use outlets.
That can make it a lot harder to wire, since garages are on slabs.













 
The new requirement for the outside receptacles not being fed off of the inside receptacles is to please the "green crowd"!:happyyes:
It is because of the required receptacles for the electric car chargers.

To answer the OP's question, I would run a minimum of 3 circuits, 4 at the most.
I might try and get the outside plugs from another circuit if I could.

Or try and sneak them off the lighting for the garage.:angel:

I'm not on the "14" here so two for me please!:)
 
Little Bill said:
The new requirement for the outside receptacles not being fed off of the inside receptacles is to please the "green crowd"!:happyyes:
It is because of the required receptacles for the electric car chargers.

To answer the OP's question, I would run a minimum of 3 circuits, 4 at the most.
I might try and get the outside plugs from another circuit if I could.

Or try and sneak them off the lighting for the garage.:angel:

I'm not on the "14" here so two for me please!:)
Click to expand...
How can you charge two cars from a 15a 120v circuit?
Sneaking the outside recepts on with the lights would be a violation?
 
mkgrady said:
How can you charge two cars from a 15a 120v circuit?
Sneaking the outside recepts on with the lights would be a violation?
Click to expand...

Doesn't matter all you need is a receptacle for each car space. The branch circuit supplying the lights can supply receptacles outside of the garage as long as the same circuit is not supply the receptacles in the garage.
 
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