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dn100 10-02-2010 03:26 PM

2 breakers / 1 circuit
I have a light in my house that is connected to two 15A breakers. If either breaker is on the light is on. The only way the light goes off is if both breakers are off. Some of my outlets are on circuits that work this way also.

Is there any valid reason for this or did the electrical contractor wire it incorrectly? Also is 14 AWG wire OK for this circuit?

joed 10-02-2010 03:32 PM

There is no valid reason for this. Somewhere on theses circuits two hots have been tied together that should have been kept separate.

frenchelectrican 10-02-2010 11:49 PM

It is not OK with that set up you have crossed connected or tied connections circuit that will raise few serious issue there and how well are you with troubleshooting level ?

This troubleshooting is little above the average level due there are few steps to be involded to correct this situation.

And you have to do the mapping the circuits mark them down on a peice of paper and turn off one breaker and find out what room or area it serve and I know you mention two breakers so do that one as well then it will be little tricky to isolated that one.

Very few case the DIYer can slove the issue but genrally most case it will be wise to call in electrician to come in and assit this situation.

Due it more than just a basic troubleshooting.

Most common curpit is at the juction box like in attic which I am aware some time someone did not relazied that they were actally have two circuit tied together.


Kirky 10-03-2010 08:01 PM

heres and idea, turn those circuits off and look ito the attic and see if you see any thing that is diff than the normal wiring and follow it maybe into a jbox that picked up some added wire, there on the same phase, start by seperating some hot wires in a box and wire nut that end to prevent shorting and checking what works and dosnt work and start your troubleshooting diagnostic there.

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