multiwire circuit square D?


  #1  
Old 09-15-14, 06:09 PM
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multiwire circuit square D?

I have a Square D panel operating as a junction point (I think it was installed before the main panel).
This Square D is connected to a 50A 2 pole on the main panel.

It has a 2 pole breaker on it that I know is connected to the receptacle that the fridge is plugged into.
I recently changed changed the receptacle by the fridge but as the breaker is 2 pole it got me thinking:
- isn't it running 240v, 120 for each hot wire?
- if I connected both and forgot to remove the hot tab, would it trip?
- this could also be a multi wire circuit powering another circuit but the breaker panel is badly labelled and I haven't yet found another receptacle.
 
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Old 09-15-14, 06:12 PM
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Was the tab broken off of the old receptacle ?

If it was..... and you replaced it without breaking the tab off.... you'd have breakers tripping.
 
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Old 09-15-14, 06:31 PM
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- isn't it running 240v, 120 for each hot wire?
Yes, but you are forgetting it is sharing the neutral.

if I connected both and forgot to remove the hot tab, would it trip
Yes, and make quite a bang at the same time!
this could also be a multi wire circuit powering another circuit but the breaker panel is badly labelled and I haven't yet found another receptacle
That would be my guess.
 
 

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