14-3 romex run for shop receptacles

[oiler]

My shop has 20 plug receptacles divided in to 3 seperate circuits fed by 14-3 romex
The electrician hasn't come back yet to install breakers for the circuits but i was just looking at it while putting up insulation
Am i right to assume that they'll be 20 amp circuits with that size wire?
And how do they wire in the plugs with the extra wire?
Thanks for any info. just curious

 

[Charles (in GA)]

Re: 10-3 romex run for shop receptacles

Am i right to assume that they'll be 30 amp circuits with that size wire?
And how do they wire in the plugs with the extra wire?
Thanks for any info. just curious

No, the receptacles are either 15 or 20 amp rated. If you have more than one 15 amp receptacle in a circuit, you are allowed by code to have a 20 amp breaker. Even with the larger wire, you CANNOT use a 30 amp breaker, the fire would start at the receptacle

Not sure what you mean by the "extra wire". Are you referring to the unusually large size (10 vs 12)? Its going to be alot of work for someone. Not sure who would be crazy enough to use #10 to wire up a regular branch circuit for receptacles. Solid #10 is difficult to work with in a box.

Charles

 

[oiler]

Re: 10-3 romex run for shop receptacles

I guess I'm used to 14-2 being used
i understand how the black and white are wired but not sure why the red would be used
i know you use it on 3-way switches and such but not on plugs
Thanks for the info.

 

[walrus]

Re: 10-3 romex run for shop receptacles

I guess I'm used to 14-2 being used
i understand how the black and white are wired but not sure why the red would be used
i know you use it on 3-way switches and such but not on plugs
Thanks for the info.

My guess is mwbc, he will use the black and white on some of the receptacles and the same white and red on the other recepts. Its a multiwire branch circuit where you share the neutral. It should be placed on a 2 pole breaker and is way to save wire, works fine and is nec complaint if done right.

I don't see how you could have 20 amp recepts though, only 15 amp as its #14 wire

 

[mrb]

I would make him redo it with #12. #14 is for 15a circuits, which i dont think anyone would want in their shop. What kind of electrican wires a shop with #14?

 

[Charles (in GA)]

I see you edited the #10 wire to read #14, so ignore my comments.

Charles

 

[franksinatra]

yep, I just did mine with 12-2 in order to have 20 amp breakers. I think outlets are good for 15 or 20 amp but its regulated by the size of breaker you are using and the breaker is regulated by the size wire. I believe you will need 12g wire to use a 20 amp breaker.

 

[dipper]

12awg wire is good for 20 amp breaker.
14awg wire is good for 15 amp breaker.

 

[oiler]

so if you had 6 receptacles on one wall you could run blk/white to 3 and red/white to the other 3 and basically have 2 seperate 15 amp circuits sharing the neutral (like Walrus said) and have them sharing a double pole 15 amp breaker
I'n not too worried about the 15 vs 20 amp difference as all my bigger stuff is 220
Thanks