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-   -   12 gauge wire to 14 gauge on an outlet question (http://www.diychatroom.com/f18/12-gauge-wire-14-gauge-outlet-question-14418/)

diyer4162 12-14-2007 12:31 PM

12 gauge wire to 14 gauge on an outlet question
 
I am redoing my basment and the guy who lived there before me ran 12 gauge flexible conduit throughout the basement...I am planning on replacing/re-routing some runs of the outlets/lights with 14 gauge romex (left over from a previous project and yes grounded to the metal boxes) and I am replacing the 20 amp breaker with a 15 amp...does this sound ok?

For instance, on one run from the breaker is the 12 gauge through a couple outlets, then between two our three outlets I will use 14 gauge where I am putting new outlets...but as long as I have a 15 amp breaker I am ok, correct.

Any insgiht will be great, thanks!

Sammy 12-14-2007 01:54 PM

If your down sizing the breaker to 15 amps it should be fine.

Some people run 20 amps as a standard now even in residential due to the increased load from all of the electronics we seem to have grown used to.

jbfan 12-14-2007 02:06 PM

It is ok to do that, but I would just buy what I needed in 12 and use the 14 for the lights.
JMHO

diyer4162 12-14-2007 02:20 PM

I have used as much of the 12 a I could, but trying to piece lengths together gets tricky....

It was my understanding that you can't use a 20 amp breaker with a combinations of 14 gauge and 12 gauge as the 14 will "fry" before the breaker would trip??

jbfan 12-14-2007 02:24 PM

Quote:

Originally Posted by diyer4162 (Post 80594)
I have used as much of the 12 a I could, but trying to piece lengths together gets tricky....

It was my understanding that you can't use a 20 amp breaker with a combinations of 14 gauge and 12 gauge as the 14 will "fry" before the breaker would trip??

Not true, but is required by code.

diyer4162 12-14-2007 02:32 PM

Quote:

Originally Posted by jbfan (Post 80596)
Not true, but is required by code.

well, since I have all applicable permits and my basement will be inspected, I will just swap out the breakers then, thanks guys!!

Andy in ATL 12-14-2007 02:33 PM

Define "fry". :laughing: :whistling2:

diyer4162 12-14-2007 02:39 PM

Quote:

Originally Posted by Andy in ATL (Post 80601)
Define "fry". :laughing: :whistling2:

potential fire hazard??

AllanJ 12-14-2007 04:23 PM

If you hang 14 gauge wire off of a branch circuit even for lights only, the circuit has to be a 15 amp. max. circuit.

If you have a circuit with 12 gauge wire throughout and want to add more to it, you'd be better off adding 12 gauge wire so you can keep it at 20 amps. and also so the next homeowner would not be confused seeing the 12 gauge wire at the panel and snap in a 20 amp. breaker for the circuit anyway.

Speedy Petey 12-14-2007 04:56 PM

Quote:

Originally Posted by Sammy (Post 80585)
Some people run 20 amps as a standard now even in residential due to the increased load from all of the electronics we seem to have grown used to.

Not me. I'd rather run more circuits.
Electronics don't have nearly the draw some folks think they do.

HouseHelper 12-14-2007 04:58 PM

12ga + multigang switches = mad electrician!

jbfan 12-14-2007 06:09 PM

Quote:

Originally Posted by HouseHelper (Post 80645)
12ga + multigang switches = mad electrician!

14 not allowed in my area= 12ga + muilti switches = normal day:censored:
Even in the few areas it is allowed, I almost always run 12. I buy 14 by the 50' box

chris75 12-14-2007 06:27 PM

Quote:

Originally Posted by jbfan (Post 80663)
14 not allowed in my area= 12ga + muilti switches = normal day:censored:
Even in the few areas it is allowed, I almost always run 12. I buy 14 by the 50' box


That is insane and I feel for you bro.

Speedy Petey 12-14-2007 09:45 PM

Quote:

Originally Posted by jbfan (Post 80663)
14 not allowed in my area

What's up jb.
I'd seriously like to know the justification behind such a stupid code. If it ever comes up please let us know.

I could almost understand a restriction on #14 to circuits with NO receptacles at all. Lighting only. But no #14 at all??? Flat out stupid!

HouseHelper 12-14-2007 10:41 PM

I used to run into this several years ago, before the colored sheathing was available. Unofficial reason was the inspectors couldn't tell the difference between 14 and 12 since it was all white, so they mandated 12ga only could be used.


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