Question about General Electric GE Circuit Breaker THQB1120GF 20amp 1-pole Bolt-on Circuit Breaker

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CAN WE USE GE THQB1120GF, 1 POLE, 20AMPS GFCI TO 220V AC SYSTEM?

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Everything I read says this is a 120VAC Single pole breaker.

There is a 120/240 version THQB1120AF that is also a 20A

This link shows a picture of one but please NOTE the link is for a reconditioned CB
http://www.circuitbreakerservice.com/General-Electric-GE/THQB1120AF_product_info.html

Here is a link for a NEW breaker:
http://www.relectric.com/Store/Circuit-Breakers/THQB1120AF

^--Seems a bit pricey to me. I would shop around. I have seen these in the $80.00 range but never thought to look to see if they were new or re-conditioned until today.

There is no way I would use your THQB1120GF on a 220VAC circuit.

Thanks for choosing FixYa

Kelly
Retired Electrician

Posted on Sep 28, 2010

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I have a gfci/switch and need a 4 wire instructions. As none of the diagrams match what i have.


What device are you replacing... a switch or a outlet?

1) If you are replacing a switch with 3 or 4 wires?
That is either a 3-way switch, 4-way switch, or a DPDT switch and cannot be replaced with GFCI

2) If you are replacing outlet with 4 wires, then it can be replaced with GFCI combo.
http://waterheatertimer.org/How-to-wire-GFCI.html#8

3) If you are replacing ordinary single-pole switch, then you can replace with GFCI combo IF the box has a neutral wire
http://waterheatertimer.org/How-to-wire-GFCI.html#6

4) You can install GFCI protection on any circuit by installing GFCI earlier in the circuit.
http://waterheatertimer.org/Basic-house-wiring.html


Gene

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1 Answer

Qo260gfi not tripping


Question is not fully clear.

2-pole 240Volt gfci circuit breaker requires the white wire be connected to neutral busbar.

Easy solution for 240Volt spa that comes with gfci:
Replace spa gfci with regular non-gfci breaker.
Install 2-pole GFCI breaker in main panel, and connect wire to spa breaker.
http://waterheatertimer.org/How-to-wire-GFCI.html#2-pole-gfci

Having 2 breakers is not a problem.
Having 2 GFCI on same circuit is a problem.

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1 Answer

How to connect leviton 5634 from GFI


GFCI device is not identified.

Leviton 5634 is typical double switch.
Open following link for image showing double switch connected to typical GFCI outlet.
http://waterheatertimer.org/How-to-wire-GFCI.html

Add a comment with details about your wiring and GFCI for more help

Upvote the help.
And take advantage of fixya expert assistance live.
For a price, expert works with you while you work on timer or any do-it-yourself project.
Fixya is always less expensive than a service call.

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I bought a new GE 20 amp GFCI circuit breaker and installed it to a new outdoor curcuit with two separate outlets. everything seems to work fine - polarities ok etc. connnected the white gfci line to the...


You can buy an inexpensive GFCI tester for as little as $10-$12. A better one with several mv settings will cost you a bit more. This way you can test this circuit and even GFCI receptacles. Then you'll know for sure if your breaker is working.

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I just tested the breaker and it won't reset. I have other gfci breakers in the panel and they test and reset fine. Is there anything that can prevent the gfci breaker from resetting?


yes. If you still have the fault it will not reset. Disconnect the out going wire to isolate the breaker and try again. If it still doesn't reset then the GFCI breaker is bad and needs to be replaced. Hope this helps you, Jeepfxr

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1 Answer

Our intermatic pool pump timer is brand new and is running backward. we bought a second timer and it is also running backward. We had an electrician come out and he can't figure it out either.


You need to check the line voltage being supplied to the timer. It is possible that you have a reversed neutral and common (hot) line providing power to the timer. It is also possible to have another reverse situation with the way the timer is hooked up to the device it is controlling.

Timer motors should only operate in one direction, but if mis-wired, they can operate backwards.

I would need more information about the exact installation you have in order to provide a more thorough diagnois and solution. Info such as is this a 220V-AC installation; is the timer hooked to more than one (1) device (pump, etc.) ; Is there a GFCI breaker on this circuit (there should be!) ; Is this a new installation or a refurbished pool with a new pump & timer?

Please use the "comment" button to supply me with the info requested so I can better address your issue.

Thanks!

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Hooking up a Hot tub


Everything above tells me this is 120V unit...if thats the case a single pole breaker is sufficient. Also by what you have written, a 15 amp breaker should suffice.

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1 Answer

GFI on cord trips out.


Probable cause is a single pole gfi opposed to a double pole gfi.
* Do not use a single pole GFCI ON A MULTI WIRE CIRCUIT, IT WILL NUISANCE TRIP IMMEDIATELY
Use a two pole GFCI circuit breaker on such circuits.

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30 amp 2 pole GE GFCI breaker pops on hot tub after hrs of use


I have seen circuit breakers trip at a lower amperage. It seems that they are weak. Generally circuit breakers run with 80% load with no problem, in your case 24 amps. I would replace the circuit breaker.

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