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Wire Chewer
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3,585 Posts
Discussion Starter · #1 ·
GFCIs can be great safety devices and I am thinking that from now on when I add a new circuit of receptacles, I will GFCI protect it. Is there any reason why I should NOT do that? I also want to look into AFCI at some point. I do know it's code for bedrooms but I'm even wondering if I should add some when I wire up my server room, or if they would be too likely to trip with such equipment. But GFCI, I can't see them causing issues.
 

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Registered
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780 Posts
Although they have become a lot more reliable I wouldn't use them for a refrigerator, freezer, or where you will be plugging in capacitive loads.
 

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Learning by Doing
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3,156 Posts
The primary drawback with GFCIs is cost. But starting a chain of recs with a GFCI isn't a bad idea. My neighbor's 'dream house' has GFCIs at every rec in their kitchen (something like 10) and all I could think about was how much their electrician managed to mark that up!

I have started adding AFCIs when I re-wire in anticipation of future requirements (living spaces in addition to bedrooms).

GFCIs should go everywhere they are required no matter what you plug into them. Dead meat isn't worth as much as live meat.
 

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Idiot Emeritus
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1,910 Posts
Sump pumps are an area of controversy.

Since the area is generally wet or at least damp, the protection offered by a GFI would seem beneficial. But if the GFI trips, the area will most likely flood, possibly creating a greater hazard.

If possible, I don't use GFIs on sump pumps, or food preservation equipment.

Rob
 

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Banned
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5,990 Posts
They may not like motor loads; it seems to me there was a thread about a washing machine that tripped its GFCI, and it finally turned out the machine manuf. had an exemption from having his machine on a GFCI.

You can measure the steady-state current in the ground wires at your CB panel; more than 3 mA will trip a GFCI, and transients that come along that last more than a few mS can also trip them.
The interconductor capacitance of 600' [10 ea. 60' lengths connected to the same breaker] of grounded Romex with nothing plugged in will give you 3 mA of reactive current.

In many cases you trade off nuisance tripping vs. some small increment of additional safety.
 

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Wire Chewer
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3,585 Posts
Discussion Starter · #8 ·
Hmm I would have to test then, and yeah never even thought about stuff like sump pumps and fridges. Probably best to use a regular outlet for those.
 
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