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83trekker 02-02-2010 03:05 PM

Double up wire on a breaker
Question I have a circuit consisting of some under cabinet mount lights for my kitchen and thatís all thatís on that circuit. I also have a plug in, in my island without anything else attached to it. My question is can I run both 15amp 14/2 wire to the same breaker from each and be within code? I am in Canada. I know for a fact that my house right now has one breaker like that, but my house was also built 23 years ago.


Termite 02-02-2010 03:13 PM

It totally depends on the listing of the particular breaker you have. Some will allow it, most will not.

I'd recommend avoiding it if you can...It is just poor practice. A better plan is to get a "twin" breaker for your particular panel, which will take one slot in the panel but will be two separate circuits. Provided you're not talking about multiwire branch circiuits (red and black wires would be indicative of that), which if landed on the same phase (slot) could overload a neutral. If you just have white and black wires it'll work fine with a twin breaker.

83trekker 02-02-2010 03:29 PM

Yes just white and black its not 14/3. I do have extra double pole 15 amp breaker can i use that , if one pops it will take the other circuit with it but i have 4 extra ones as im redoing my kitchen and went 20 amp where all the double pole 15 amps were.

83trekker 02-02-2010 03:36 PM

$16 bucks for a double 15amp breaker that fits into 1 slot with out the double pole, hell for that price i will just go that way and do it proper. Thanks!

AllanJ 02-02-2010 04:57 PM

Only one wire end is permitted under any one plain screw head. If you needed or wanted to double up, what would be two circuits, on one breaker, cut a pigtail (short length of wire) and wire nut that to the two incoming hot circuit wires and connect the other end to the breaker.

Special clamp terminals with a pressure plate allow multiple (usually two) wires to be tightened in place with one screw; these are sometimes found at the back of receptacles in place of backstab holes.

Also, two incoming 14 gauge branch circuit cables may not be connected to one 20 amp breaker; you are limited to a 15 amp breaker.

HooKooDooKu 02-02-2010 05:07 PM

Presumably you have some sort of junction box for these circuits. After all, you've got to be connecting the lights to the circuit in a box and you've got to have the plug installed in a box. Since you apparently don't need two circuit breakers (since you want to put both circuits inside one), why not just run a load wire from the plug box to the lights box? Or do we already have a pair of wires back at the circuit breaker?

Scuba_Dave 02-02-2010 06:21 PM

Square D breakers are allowed to have 2 hots on the breaker connection
Not sure on other Mfg's
I prefer only 1 wire

Termite 02-02-2010 06:51 PM


Originally Posted by Scuba_Dave (Post 393607)
Square D breakers are allowed to have 2 hots on the breaker connection
Not sure on other Mfg's
I prefer only 1 wire

Correct. :yes:

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