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Old 02-10-2011, 01:11 AM   #1
Bizoune
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Is it ok/recommended to add an GFCI on a march pump toolbox if the power is already coming from a GFCI outlet? I'm thinking of adding one directly on the toolbox in case I ever take my equipment where a GFCI is not available, so I can then use it safely.

So my circuit would look like this:

GFCI in garage > GFCI on toolbox > on/off switch > pump > back to GFCI in the garage

Is this possible or will 2 GFCI outlets back to back screw up the whole outfit?


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Old 02-10-2011, 01:16 AM   #2
Walker
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two gfi outlets chained together will not cause any problems. You're plan is fine.


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Old 02-10-2011, 05:15 PM   #3
Cpt_Kirks
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I have my GFCI's and switches mounted on my brew bench:



In my house, there is a GFCI outlet "downstream" from another GFCI (bathroom) outlet. The only odd thing I have seen is that if one trips, the other trips. Which, when I think of it, is probably how it should work.

 
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Old 02-10-2011, 05:36 PM   #4
Walker
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Quote:
Originally Posted by Cpt_Kirks View Post
The only odd thing I have seen is that if one trips, the other trips. Which, when I think of it, is probably how it should work.
That would be expected. If there is a fault both outlets are going to see it and both will trip. You *might* get an instance where the one on your panel trips and the one further back on the house does not, but I would expect them to both go at the same time in most cases.
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Old 02-10-2011, 05:38 PM   #5
troy4500
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I don't think 2 gfci in tandem is a good thing. I believe you will continue to trip the gfci. I am not an electrician, but I have heard about this on home improvement shows.

 
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Old 02-10-2011, 05:46 PM   #6
illin8
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Yeah, you don't want more than one GFCI per circuit...one covers it.
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Old 02-10-2011, 06:56 PM   #7
cincybrewer
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Quote:
Originally Posted by troy4500 View Post
I don't think 2 gfci in tandem is a good thing. I believe you will continue to trip the gfci. I am not an electrician, but I have heard about this on home improvement shows.
I'm not an electrician either but this isn't really true. You can have multiple GFCI's on one circuit but it isn't needed. A GFCI will protect all downstream outlets so they all essentially become GFCI's. When you have multiple GFCI's, when one trips, you have to reset all of them.

 
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Old 02-10-2011, 07:11 PM   #8
mmurray
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2 GFCI's inline isn't going to hurt anything but your wallet! Figure that most home improvement stores will sell these between $15 and $18, while a regular outlet is $2. So as long as the main feed comes to the GFCI and all other outlets are fed off of it they will all be ground faulted plugs (provided you remove the little sticker off the top legs of the GFCI outlet and connect the other outlets there so that they will be protected).
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Old 02-10-2011, 07:29 PM   #9
Bizoune
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Thanks for all the info. Anybody have the schematics to wire this up?
I'm an geeky accountant, so forgive my ignorance on electrical circuits. I'm assuming black on black, white on white etc. I dont' have an GFCI outlet with me but isn't there 3 or 4 screws on the unit to receive either one of the 3 wires coming for the extension cord. Any way I can not screw this up?
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Primary 1: Rigo's IPA
Primary 2: Sweet Mama Barley Wine
Primary 3: empty
On tap 1: Cascadian Canadian Lager
On tap 2: SNPA American
On tap 3: SNPA English
On deck: Columbus IIPA
On deck: Marco's Vanilla Porter
On deck: Wild West Am. Wheat

 
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Old 02-10-2011, 07:37 PM   #10
mmurray
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