2 pole FGCI Breaker
#1
Member
Thread Starter
Join Date: Jan 2007
Posts: 14
Upvotes: 0
Received 0 Upvotes
on
0 Posts
2 pole FGCI Breaker
I want to purchase and install a 2 pole GFCI breaker (20 amps) to my in-ground swimming pool. I have installed several single pole 120 volts with no problems. My question... my pump has 2 hot wires (120V) and 1 insulated green wire going to it; no nuetral is required for my pump, is these 3 wires all that is needed for a 2 pole installation?
Last edited by waterman; 01-29-07 at 04:52 PM. Reason: typo
#6
Member
Join Date: Sep 2003
Location: Central New York State
Posts: 13,245
Upvotes: 0
Received 0 Upvotes
on
0 Posts
A 120 volt GFCI breaker or receptacle looks for an imbalance of current between the hot and the neutral wire.
A 240 volt GFCI breaker also looks for a current imbalance. However, with a 240 volt breaker it looks for a current imbalance on all three wires. It knows that the current on the neutral needs to be the difference between the current on each hot wire. With no neutral to carry current, the current on each hot leg MUST be equal or the GFCI breaker will trip.
A 240 volt GFCI breaker also looks for a current imbalance. However, with a 240 volt breaker it looks for a current imbalance on all three wires. It knows that the current on the neutral needs to be the difference between the current on each hot wire. With no neutral to carry current, the current on each hot leg MUST be equal or the GFCI breaker will trip.