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Old 10-24-2009, 12:28 PM   #16
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Wiring a GFCI Outdoor Outlet from an Inside Outlet - Parallel or Series?


I am not sure what the exact question is.

Is it can you use a multi-wire circuit in a garage? If so yes, you can.
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Old 10-24-2009, 01:19 PM   #17
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Wiring a GFCI Outdoor Outlet from an Inside Outlet - Parallel or Series?


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Originally Posted by jerrysatu View Post
I also forgot to ask about what is meant by "shared neutral wire" and "separate neutral wires?".....
Jerry if you only have a 120V circuit in the garage then you do not have to be concerned with a shared neutral. 220 V circuits commonly use a shared neutral .

Google "Shared Neutral Wiring" for an exposition.
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Old 11-11-2010, 09:24 PM   #18
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Wiring a GFCI Outdoor Outlet from an Inside Outlet - Parallel or Series?


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See if this helps:

.
Hi Bob,

Does this illustration hold up if I use a GFCI between two standard receptacles (inside the house) and two standard receptacles (outside the house). I want to make sure and protect the receptacles outside the house.

Thank you very much,

Mike
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Old 11-11-2010, 09:56 PM   #19
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Wiring a GFCI Outdoor Outlet from an Inside Outlet - Parallel or Series?


What I would do is put the GFCI indoors, then tap off that one (load side). That way the entire outlet/box is protected. (ex: if water gets into the box or something). This also doubles as an indoor switch for Christmas lights if it's in a convenient location for that. :D
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Old 11-11-2010, 10:17 PM   #20
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Wiring a GFCI Outdoor Outlet from an Inside Outlet - Parallel or Series?


You can connect an ordinary GFCI receptacle unit to a (120/240 volt) multiwire branch circuit.

The MWBC can continue on to other receptacles or other loads and not using the load terminals of the GFCI unit. The GFCI protection does not continue on here.

A 2 wire cable (hot and its own neutral) can be run from the load terminals to continue GFCI protection to other receptacles etc. This is not part of the MWBC.
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Old 11-12-2010, 08:21 AM   #21
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Wiring a GFCI Outdoor Outlet from an Inside Outlet - Parallel or Series?


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Originally Posted by Speedy Petey View Post
The others answered your question and did comment on this, but I'll add my 2 cents.

ALL line voltage 120/240v AC wiring in a home is parallel. The terms series and parallel do not ever need to be considered.

What might seem like series wiring, due to the physical way it is wired, electrically is still parallel.
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Old 11-12-2010, 08:46 AM   #22
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Wiring a GFCI Outdoor Outlet from an Inside Outlet - Parallel or Series?


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Originally Posted by Knucklez View Post
from panel to line side of GFI. then other regular type receptacles are all connected in parallel to the load side. keep in mind that a GFI can only protect up to 4 other receptacles.
Where did this tid- bit come from?
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Old 11-12-2010, 11:13 AM   #23
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Wiring a GFCI Outdoor Outlet from an Inside Outlet - Parallel or Series?


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Originally Posted by Red Squirrel View Post
What I would do is put the GFCI indoors, then tap off that one (load side). That way the entire outlet/box is protected. (ex: if water gets into the box or something). This also doubles as an indoor switch for Christmas lights if it's in a convenient location for that. :D
This is exactly what I'm after. I'm coming off an established standard outlet (inside the house) to a couple outlets outside of the house for Christmas lighting.

So if I replace the inside outlet with a GFCI and then go outside, I should be protected correct?

Thanks All!

Mike
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Old 11-12-2010, 06:19 PM   #24
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Wiring a GFCI Outdoor Outlet from an Inside Outlet - Parallel or Series?


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Originally Posted by PaliBob View Post
On current GFCI receptacles, you donít twist the conductors around the side screws
.

Bob, i am curious. are you advocating backstabbing the GFCI's with 12/2? I was not aware that was even possible. Maybe i am not understanding what you are saying..
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Old 11-12-2010, 06:41 PM   #25
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Wiring a GFCI Outdoor Outlet from an Inside Outlet - Parallel or Series?


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Bob, i am curious. are you advocating backstabbing the GFCI's with 12/2? I was not aware that was even possible. Maybe i am not understanding what you are saying..
Current GFCI's have a slot where you insert the wire
You then tighten down the wire...holding it in place
Easily loosened & wire can be removed
Much different then a back wire, which usually relied on a spring
I'm not sure if all new GFCI's are like this ?
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Old 11-12-2010, 11:24 PM   #26
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Wiring a GFCI Outdoor Outlet from an Inside Outlet - Parallel or Series?


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Originally Posted by voodooblue View Post
This is exactly what I'm after. I'm coming off an established standard outlet (inside the house) to a couple outlets outside of the house for Christmas lighting.

So if I replace the inside outlet with a GFCI and then go outside, I should be protected correct?

Thanks All!

Mike

Yes as long as the outside outlet (non GFCI) is connected to the load side of the indoor GFCI. The line side is to feed the GFCI, the load is for any additional outlets that are to be protected. I believe you need to label these outlets with a sticker, but not sure if that's code or just a convenience thing.
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Old 11-13-2010, 07:50 AM   #27
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Wiring a GFCI Outdoor Outlet from an Inside Outlet - Parallel or Series?


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Originally Posted by 1910NE View Post
Bob, i am curious. are you advocating backstabbing the GFCI's with 12/2? I was not aware that was even possible. Maybe i am not understanding what you are saying..
1910
Go back and re read that posting. PaliBob is merely pointing out all the misinformation that is out on the web.
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Old 11-13-2010, 07:59 AM   #28
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Wiring a GFCI Outdoor Outlet from an Inside Outlet - Parallel or Series?


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Originally Posted by bobelectric View Post
Where did this tid- bit come from?
Your not keeping up with technology. The new GFCIs have a microprocessor that measures the open circuit impedance of all the parallel attached receptacles and when it reaches infinity/4 the GFCI trips.
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Old 11-13-2010, 03:36 PM   #29
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Wiring a GFCI Outdoor Outlet from an Inside Outlet - Parallel or Series?


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Originally Posted by a7ecorsair View Post
......when it reaches infinity/4 the GFCI trips......
I don't know how to put a unit of measurement on ∞/4
Can you cite a source?

Personally I try to go by the unofficial 100' guide line, meaning that the maximum length of cable connected to a GFCI 'Load' is 100' rather than any specific number of Load side receptacles. My experience with GFCI nuisance tripping leads me be blame the total background leakage current for nuisance trips rather than actual ground faults.

I built my own leakage Tester to help analyze GFCI tripping.
GFCI Tester
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