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-   -   14 guage splice into 20 amp 12 guage circuit OK (http://www.diychatroom.com/f18/14-guage-splice-into-20-amp-12-guage-circuit-ok-1479/)

Bakes5 12-17-2005 07:00 PM

14 guage splice into 20 amp 12 guage circuit OK
 
Is it ok to splice 14 guage into 12 guage that terminates on a 20 amp circuit?

The only thing that will be on the 12 guage is a set of recessed lights (4 lights at 50 watts each).

Anybody see anything wrong with that?

Thanks

Bakes

Speedy Petey 12-17-2005 08:06 PM

The breaker MUST be sized to the smallest wire in the circuit.
That being said, there is no good reason to mix wire sizes. Unless given NO other choice.
Going bigger after the breaker is not as bad as going smaller. This way there is no chance of someone not knowing putting the wire back on a breaker that would be normal for the wire.

Wire is cheap, do it the right way. Stay all the same size.

Bakes5 12-19-2005 07:40 PM

Fair enough. "Don't mix" seems to be the common response.

I have a "friend" who may have mixed on an earlier project. Is it ok if he just switches out the breakers so that they are 15 amp? Then if they keep tripping go back and swap out the under sized wires?

Speedy Petey 12-19-2005 08:41 PM

If this is done then it is a really good idea to permanently label the wire with a tag
saying "15 amp only". This way someone in the future is not confused.

If the 15 trips regularly then a whole new circuit may be a better alternative.


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