GFCI breaker tripping using Intermatic P1353ME timer

[JGard911]

I am trying to switch over to a Intermatic P1353ME timer inside a PE25300 control center and every time I try to turn on the pump the breaker trips.
I am pretty sure I followed the wiring diagram correctly. The pump was running as expected before I tried to switch it over. Any suggestions?

 

[Jimrahbe]

911,

When you get power from a GFCI breaker, the neutral wire has to go back to the breaker and not to the neutral bus bar.

Thanks,

Jim R.

 

[Jimrahbe]

911,

Does your pump run off of 240 VAC or 120 VAC?

It is hard for me to see where each black wire is going so tell me more.

1. Where does the black wire on the left side of the GFCI breaker go?
2. Where does the black wire on the right side of the GFCI breaker go?
3. Where does the black wire on the open 15 amp breaker go?


Thanks,

Jim R.

 

[1poolman1]

If that is a 120v installation, you have created a dead short at CIRCUIT 1. And, you can't run a 120v load on a double-pole GFCI breaker. It senses an unbalanced load (which indicates a "ground fault"). If it is 240v white wire shouldn't be used.

 

[ajw22]

If that is a 120v installation, you have created a dead short at CIRCUIT 1. And, you can't run a 120v load on a double-pole GFCI breaker. It senses an unbalanced load (which indicates a "ground fault"). If it is 240v white wire shouldn't be used.

You can run a 120V load off one leg of a 240V GFCI CB. The neutral for the 120V loads need to connect to that middle screw on the CB.

 

[1poolman1]

You can run a 120V load off one leg of a 240V GFCI CB. The neutral for the 120V loads need to connect to that middle screw on the CB.

Never worked that way for me.

 

[Jimrahbe]

Never worked that way for me.

Kind of the whole point of having a neutral connection on a GFCI breaker. It certainly won't work if you try to steal 120 volts from a 240 GFCI breaker without connecting the 120's neutral back to the breaker.

Not that it matters, as it appears that the OP has lost interest.

Thanks,

Jim R.

 

[ajw22]

Welcome to TFP.

IF YOUR PUMP IS 120v then I believe this is the correct wiring...

Wire C on screw 5 goes to screw 6 - that is a hot 120V wire to power the timer.
Wire B goes to screw 2 - that is the LOAD hot wire
Wire A goes to screw 3 - that is the load neutral connection
Wire D goes from screw 4 to screw 1 - that is the LINE hot 120v wire.
The black wire on the unused left hand screw on the CB should be removed.

Now why are you using half of a 240V GFCI CB for a 120V pump?