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| GFCI Devices Nuisance Tripping https://brainfiller.com/arcflashforum/viewtopic.php?f=33&t=2351 |
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| Author: | Jim Phillips (brainfiller) [ Sun Jul 22, 2012 6:03 am ] |
| Post subject: | GFCI Devices Nuisance Tripping |
Class A ground fault circuit interrupters (GFCI) are designed for the protection of personnel. NFPA 70E addresses GFCI requirements in more detail with the 2012 Edition. This week's question: Have you ever experienced nuisance tripping from a GFCI device?
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| Author: | JBD [ Sun Jul 22, 2012 9:05 am ] |
| Post subject: | |
Do you mean it was a nuisance that the GFCI did its job, or the reason for the GFCI trip was never determined? |
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| Author: | Jim Phillips (brainfiller) [ Sun Jul 22, 2012 4:27 pm ] |
| Post subject: | |
JBD wrote: Do you mean it was a nuisance that the GFCI did its job, or the reason for the GFCI trip was never determined? Thanks JBD - I believe I need to clarify this a bit more. I meant nuisance tripping from normal operations such as starting a device like a saw, hair dryer etc. i.e. as you stated, the reason was never determined. Sometimes when a motor operated device is on a GFCI circuit, the initial magnetizing current during starting (not the locked rotor current) can cause the GFCI to see enough of an unbalance that it nuisance trips. I have had several nuisance trips over the years with power tools on a GFCI circuit tripping. It is not a common occurrence but it does happen. |
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| Author: | Vincent B. [ Mon Jul 23, 2012 5:22 am ] |
| Post subject: | |
Beard trimmer in my bathroom. Haven't felt any shock, so reset the GFCI and restarted the trimmer without any other incident. |
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