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Low voltage coming from outlet

GFCI tripped in kitchen and now the hot wire is only showing between 2.8v and 4.5v

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1) Copy following links:

2) Move hot wire to different, same-amp, circuit breaker and see if problem persists.
Look for loose quick connect on back of each switch and outlet on circuit, including GFCI, replace GFCI.

3) Add comment and say what you find.

Posted on Dec 31, 2012

Testimonial: "This was great advice, and sniffed right the correct path. It turned out to be a tripped breaker in the sub panel, which feeds the breaker box (or whatever you want to call it) power. Thank you for the quick response; this was confusing one. -jason"


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Posted on Jan 02, 2017

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SOURCE: gfci breaker for spa

gfci's are designed to trip if they receive voltage on there ground/neutral side, therefore my vote is for Smithbrother I would say there is probably a partial short somewhere in you system.

Posted on Mar 24, 2009

  • 313 Answers

SOURCE: I'm installing a 40A 2-pole

Try this...

You mentioned a 8-3 cable suppling power to the sub-panel. I am assuming you have a 8-3 WITH ground or 4 conductors, black, red, white AND ground.

In the sub-panel do not bond the neutral bar to the box or ground bar. If there is a green bonding screw on the neutral bar...remove it. If you have only one (1) neutral bar add another bar for your grounds and bond this bar to the box. Keep the neutrals isolated from the grounds.

I hope this has helped. If you need additional information please send me a follow-question.

Posted on Sep 10, 2009

  • 1378 Answers

SOURCE: 20 A AFCI Homeline trips

You should not have multiple GFCI devices in any one circuit. Change out the outlet and label it
GFCI Protected if necessary...Your problem of nuisance trips should go away.


Posted on Sep 21, 2011

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GFCI receptacles are polarized and connecting them correctly is critical. The hot wire should be black, blue, red, etc. The neutral should be white or natural gray. The ground should be green (if equipped).

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Check all outlets in the kitchen and be sure they are wired correctly and in good shape. Unplug everything while you test. If the GFCI still trips, start looking for loose neutrals or bad ground wiring (or no ground) at the other receptacles since you said you already checked the breaker box.

A coffee maker can be a cuplrit that causes a GFCI to trip since it is a heating device and uses water, which can make them more susceptible to electrical problems. Check the microwave too (if equipped).


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gfci's are designed to trip if they receive voltage on there ground/neutral side, therefore my vote is for Smithbrother I would say there is probably a partial short somewhere in you system.

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There can be a few different reason for a trip. 1. Amps exceed rating off GFCI ie 15 amp receptacle can only handle up to 15 amp anymore and it will trip. 2. miss wiring; neutral must be on white screws hot on black and ground, green also inlet power (line) must be on bottom screws, outlet or load must be on top 3, a short, whether it be neutral or hot touching something in the box. Frayed wire, wire next to side of interior of box or yes moisture. Also a short in an appliance aven a new one can cause a trip. Remember if the refrigerator is on this same circuit, which is not a good idea it can cause a trip. At start up the fridge can spike to near 15 amps and a voltage spike can cause a gfci to trip. There are 20amp GFCI's so that can be your last resort, if all else fails.

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