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Old 02-17-2012, 07:22 PM   #21
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Re: Gfi?

Elwin:
If true, then why wouldn't the 120v outlet do the same w/ the tester? The tester should show that all the wires are where they should be, yes?
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Old 02-17-2012, 07:34 PM   #22
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Re: Gfi?

Because on a normal duplex there isn't any connection inside that type of device to make the tester check the hot to ground whereas in a GCFI there is a resistor inside the block that once the tester is inserted puts a connection from the hot to the ground through it to make sure it will trip. In other words; in a ordinary duplex the tester does verify the ground and neutral isn't open but there isn't any load placed between each. In a GCFI there is a circuit between the hot and ground provided by the tester.

Hope that helps some?

Elwin*
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Old 02-17-2012, 07:50 PM   #23
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Re: Gfi?

Yes, helps big time. I always swore to myself I'd never do electricity or brakes, here I am messing w/ electricity. Brakes, never. Many thanks.
Mike
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Old 02-17-2012, 07:56 PM   #24
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Re: Gfi?

Yes, reverse gear, 1500 rpm, stop on a dime.
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Old 02-17-2012, 08:26 PM   #25
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Re: Gfi?

Quote:
Gulf Comanche wrote:
Yes, helps big time.
Doesn't help me one iota.

Elwin: care to explain what a "simulated ground" is?
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Old 02-17-2012, 09:01 PM   #26
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Re: Gfi?

Sure RJ, lets say you plugged in a drill and the ground wire inside the casing is open but there is a strand of wire from the hot wire touching the casing and you pick it up, your hair just may stand on its end or if you have a weak heart, it could skip a beat and not make the next one. The GFCI is to protect almost instantaneously*that situation and trip. These units are placed around areas where there may be moisture or places that would increase the probability of getting a shock.*

Well some of these testers that are used to check out the GFCI, places an internal load inside the tester from hot to ground to ensure it will trip at 5ma. Basically the tester is simulating a ground detection.*

Elwin*
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Old 02-17-2012, 10:51 PM   #27
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Re: Gfi?

Quote:
Gulf Comanche wrote:
*I always swore to myself I'd never do electricity or brakes,
*Where would the *the 'Darwin Awards' be if everyone had that attitude?
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Old 02-18-2012, 05:28 AM   #28
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Re: Gfi?

So what you're saying Elwin is that the tester is designed to trip the GFCI?* I've never seen one like that but that doesn't mean they don't exist.* Any GFCI I've ever seen has that test function built right into the outlet.* Back to the OP though I don't see why that type of tester - if that's what he has - wouldn't just trip his GFCI.
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Old 02-18-2012, 07:02 AM   #29
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Re: Gfi?

Nope they check the function of the CGFI but causes a load to ground that would probably cause the inverter to sense it. Yes every CGFI duplex has a trip mechanism.

http://www.etcon.com/ct101.htm

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Old 02-18-2012, 07:21 AM   #30
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Re: Gfi?

I'm not convinced.* If the inverter is sensing a drain to ground then it should see that load through a regular duplex exactly as it sees it through the GFCI.
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Old 02-18-2012, 07:26 AM   #31
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Re: Gfi?

Both duplexes are different, one has an opened ended connection while the other has a build in trip mechanism that detects any current leakage to ground. When you plug the tester in both there are different results.*

Oh well, can't help any more on this topic.

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Old 02-18-2012, 08:39 AM   #32
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Re: Gfi?

What you're claiming is that some specific tester has internal circuitry that detects the GFCI and then performs differently on a GFCI than it does on a regular duplex.* There may be such a tester - the link you posted made no such claims and it didn't contain sufficient details to determine whether the tester illustrated had that capability.* I doubt it does but leave that aside for a minute.* Now we have to assume that the OP has such a tester with that specific capability and that is why his problem is occurring.* Most testers that you pick up at Home Cheapo or Wallyworld can't even test the GFCI function, let alone having*this added ability to detect whether they are plugged into a GFCI outlet that you are*now claiming.*

Like I said - I'm not convinced.

*
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Old 02-18-2012, 04:03 PM   #33
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Re: Gfi?

Actually, most testers DO have the function to test the GFCI function. When plugged in to the GFCI or any outlet downstream in the same circuit, the tester normally indicates correct wiring and path to ground by way of the indicator lights. USUALLY there is also a button that, when pressed, will cause the GFCI outlet to trip in much the same fashion as the test button on the GFCI outlet itself. This function should trip the GFCI, regardless of which outlet (in the same circuit and downstream of the GFCI outlet) it is in if the circuit is wired correctly.

The key is "wired correctly". Any GFCI outlet will have the connections identified, usually as LINE and LOAD where LINE refers to power coming INTO that outlet box and LOAD refers to anything beyond (or downstream) that outlet box in the circuit. To protect the downstream side, the wiring feeding the downstream side MUST be attached to the LOAD terminals of the GFCI outlet. If the GFCI is installed off a pig tail type of splice to the LINE side only, it will only protect at that outlet, leaving the balance of the circuit in an unprotected state, as it was before the GFCI outlet installation.

This tester available at Home Depot has that function, the description at the link explains all it's capabilities.

http://www.homedepot.ca/product/outl...-1-clam/963591
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Old 02-19-2012, 05:46 AM   #34
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Re: Gfi?

The "test" for most is weather the inverter will operate with that GFI.

IF the wall cheapos are too sensitive , there are GFI circuit breakers that can be installed in an old power panel.
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Old 02-19-2012, 04:52 PM   #35
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Re: Gfi?

Quote:
RT Firefly wrote:
*and I'm also aware that replacing a duplex with a GFCI in any circuit protects ALL of that circuit.**

Only if it's the first receptacle on the circuit and only if it's wired to protect the downstream receptacles.* The instructions will be in the box to do it either way.
*
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