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Old 10-16-2017, 07:53 PM   #1
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why sump pump tripped dedicated gfci


I recently had a reputable plumbing company install the pro series ps-c33, the other day the dedicated outlet it was plugged into had the gfci trip, stopping the unit from getting ac power, which I got alerted to of course. I reset the gfci and all is well, but why would this unit have tripped the gfci, as its well under the circuit capacity?
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Old 10-16-2017, 09:48 PM   #2
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Re: why sump pump tripped dedicated gfci


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Originally Posted by lightadjust2000 View Post
I recently had a reputable plumbing company install the pro series ps-c33, the other day the dedicated outlet it was plugged into had the gfci trip, stopping the unit from getting ac power, which I got alerted to of course. I reset the gfci and all is well, but why would this unit have tripped the gfci, as its well under the circuit capacity?
Could be a lot of different reasons.
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Old 10-17-2017, 08:28 AM   #3
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Re: why sump pump tripped dedicated gfci


I would never use a GFI outlet for a sump pump, a refrigerator or a freezer.
Never.
I don't care what the NEC says.
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Old 10-17-2017, 02:10 PM   #4
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Re: why sump pump tripped dedicated gfci


I actually had to replace my Ground Fault breaker because it was constantly tripping. Once replaced with new no tripping.
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Old 10-21-2017, 03:56 PM   #5
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Re: why sump pump tripped dedicated gfci


if you'd had a pro wtrproofer do the work, they'd have probably used a zoeller m-53 1/3rd hp that has a startup rqmnt of 9.7amps & run of 4.3,,, plumbers aren't the correct trade for this work impo,,, liberty'd be my 2nd choice
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Old 10-21-2017, 05:50 PM   #6
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Re: why sump pump tripped dedicated gfci


Just another reason why a battery powered backup sump (and alarm) is a good idea... it happens. IMO, it's also a good idea to have that GFCI placed somewhere it can be reset without stepping in water... and if that's not possible, kill power to the circuit, reset the GFCI, then restore power to the circuit.
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Old 10-23-2017, 06:09 AM   #7
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Re: why sump pump tripped dedicated gfci


if on city water, better idea is wtr-power'd backup,,, battery b/u's just don't have the ***** in hvy leaking situations
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Old 10-23-2017, 06:46 AM   #8
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Re: why sump pump tripped dedicated gfci


GFCI's don't trip on overload. They trip on the potential difference between the hot and neutral, so in essence, you had a ground fault, not an overload. Likewise, if it is a dedicated circuit and you experience GFCI tripping, it could be a leak in the motor where the wiring enters or along the cord. A normally open switched alarm would be mandatory, IMO to alert you to a failure.

Edit: was a GFCI receptacle installed or a GFCI breaker??
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