What I found at the sub panel in the garage was an old Murray 120/240 being fed from the main with a 12/2 or 10/2 (dont remember) bx. At each phase I get 120 from phase to neutral. It has 2 double pole 15 amp breakers, which they used for 4 circuits. One for a swimming pool filter (8 amp) ,and a few light fixtures (keeping in mind that the filter is on a timer so it's not constant). Second side of the two pole is feeding a refrigerator, but the other breaker has two other separate circuits. One serving a GFCI, and two outlets. The final pole is feeding two other outlets.

What concerns me is that they went with three circuits into a junction, and in that junction all the neutrals are together (one being for a GFCI). Shouldn't the circuit feeding the GFCI's neutral be separated, as if to be a dedicated circuit? In the subpanel they are all in individual on the neutral bar.

Another thing is that they had to jump the phases to get the other half of the panel to work. I just never seen a circuit wired that way, or the phases jumped.


1 Answer 1


If it truly is three separate circuits, then none of the "neutrals" should be tied together in the junction box. Parallel conductors are not allowed (according to National Electrical Code), so they should all be separate.

I don't know what you mean by "jump the phases", so I can't comment on that.

  • By jumping the phases I mean they took a Black wire from one phase and tied it into the other bar where instead of Feedind it with a 12/3 they fed the panel with a 12/2 and just put one leg into the hot bus bar and took a piece of wire and jumped to the other bar as to liven the other half of the panel I wish I would have taken a picture of it but will next week when I go back
    – user38389
    Jun 15, 2015 at 2:04

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