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Old 10-18-2010, 10:33 PM   #1
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GFI wiring issue

I built a detached garage last summer and did the elctrical wiring myself except for the panel hookup. When the electrician did my panel hookup he double checked my wiring for me and it was inspected by the city, everything passed. The issue I have is one of my GFI outlets trips all the time. I was told by the electrician that the first outlet of each circuit needs to have GFI outlet on it, I have three circuits. He also told me that each outlet outside, I have two, needs to be a GFI outlet. I did this, so I have two circuits with two GFI outlets on each of them. One circuit never trips the other quite frequently. I was told by another guy that you shouldn't have two GFI's on the same circuit but according to the electrician I need one at the start of a run and one on any outlet outside. Since my outside outlets are at the ends of the runs this isnt possible. Any clarification would help.


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Old 10-18-2010, 10:40 PM   #2
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Receptacles that are wired from the LOAD terminals of a GFI receptacle will be GFI protected. You do not necessarily need a GFI receptacle at each location as long as they are downstream of a GFI.


Answers based on the National Electrical Code. Local amendments may apply. Check with your local building officials.
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Old 10-19-2010, 08:27 AM   #3
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Your outside receptacles have to be GFCI protected, not necessarily GFCI receptacles themselves. As Jim Port said, protection of the 'downstream' receptacles and wiring can be accomplished by wiring to the LOAD side terminals of a GFCI receptacle (then you don't need any more GFCI receptacles on that circuit). Another way is to use GFCI breakers in the panel, and then the entire circuit would be GFI protected (then you don't need any GFCI receptacles). GFCI breakers protect the entire circuit where as GFCI receptacles only protect themselves and whatever is hooked up to their load terminals. The dis-advantage of the breaker is that they cost 3-4 times more than a GFCI receptacle.

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Old 10-19-2010, 09:15 PM   #4
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If I replace the downstream GFI with a normal recp. will that fix the constant trip problem?
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Old 10-20-2010, 01:37 AM   #5
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If you get rid the second RCD { GFCI } receptale and keep the first one then yeah it will work good and may slove some tripping you have.

{ I genrally try to advoid to use the RCD on outdoor location much as possble if have to use it just make sure you leave something open on the bottom to let any moisture to drain out. }

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gfci , gfi

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