GFCI on multiwire circuit

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KentAT

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Northeastern PA
Will a GFCI receptacle work properly on a multiwire branch circuit (120/208v 3-ph, 4 wire system) that is using shared grounded conductors (shared neutrals)?

I'm thinking that a GFCI receptacle would work normally, but a GFCI breaker would not.

Is this correct?
 
Individual GFI receps will work when the neutal is pigtailed at the device.

Neither GFI receptacles feeding downstream receptacles or individual GFI breakers will work on multi-wire circuits sharing the neutral.
 
KentAT said:
Will a GFCI receptacle work properly on a multiwire branch circuit (120/208v 3-ph, 4 wire system) that is using shared grounded conductors (shared neutrals)?

I'm thinking that a GFCI receptacle would work normally, but a GFCI breaker would not.

Is this correct?
Click to expand...

A gfci breaker would if it were a dp GFCI ... Two sp GFCI breakers would not work
 
KentAT said:
Are 3 pole GFCI breakers available?
Click to expand...

I have never seen one and GE does not make one. If they did you might have a heartattack at the price. DP 50 GFCI are at least $80.00 here in NC
 
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