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#1
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+1 testing a GFCI where no ground is available?
In ,
zxcvbob typed: Nate Nagel wrote: Hi all am looking for a hopefully easy to obtain, not too expensive method of demonstrating that a receptacle is GFCI protected... long story short. Am selling house, got offer. Home inspector came through and wrote up two receptacles as being "ungrounded" despite them actually having the blue stickers on them that said "GFCI Protected - No Equipment Ground" (duh) before you ask, it would be fairly difficult to pull grounds to these boxes, otherwise I'd not be fighting. Also there are a approximately 5 or 6 other receps throughout the house that I haven't grounded yet that are in a similar situation, and I don't want to open that can of worms whereby accepting that the lack of a ground at these receps is a fault that needs to be corrected leads to the request to ground *everything.* (house was built in 1948, before you ask. I did update a good bit of the wiring already, just not all of it. Everything is to the best of my knowledge code compliant at this time, and in fact I got a permit for the rewiring I did on the 2nd floor a while back.) SO. I scanned the page of the NEC (2008 edition, which is what my AHJ is using these days) addressing the replacement of ungrounded receptacles; called the head inspector to confirm that there were no local addendums to the code (he said no) and so I have a case, right? I just need to demonstrate that the receps are in fact downstream of a GFCI. Here's where I had a moment of dumbass. I figured I would just stop by the Local Hardware Sellin' Emporium and get one of those plug in cube testers - kind of like the one I already have but this time the fancy one with the little button on the top to test a GFCI. That should do it, right? Well I get it home (not the house for sale, my current temporary residence) and plug it in to a kitchen recep, push the button, GFCI pops. Then I read the instructions - says it may not work on ungrounded receps. Of course it wouldn't - it probably just has a resistor that the button inserts between hot and ground so that it allows a current slightly higher than 5 mA @ 120V. duh! So the question is - is there a tester available that I could use to demonstrate the principle to someone who's not really clueful about such things that the GFCI really works? I could use a test lead to connect the ground pin to a faucet or something, but I have a feeling that that wouldn't really help the case that I know what I'm talking about and did a proper job in front of people who aren't really clueful about electricity and have never heard of the NEC... any ideas? thanks nate Plug your tester into the allegedly-protected outlet. It will show that it's otherwise properly wired but with a missing ground. Press the "TEST" button on the GFCI that protects it, it will trip, and the light on the downstream outlet tester will go out. -Bob Right. |
#2
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+1 testing a GFCI where no ground is available?
On Jun 9, 10:24*am, "Twayne" wrote:
, zxcvbob typed: Nate Nagel wrote: Hi all am looking for a hopefully easy to obtain, not too expensive method of demonstrating that a receptacle is *GFCI protected... *long story short. Am selling house, got offer. *Home inspector came through and wrote up two receptacles as being "ungrounded" despite them actually having the blue stickers on them that said "GFCI Protected - No Equipment Ground" (duh) before you ask, it would be fairly difficult to pull grounds to these boxes, otherwise I'd not be fighting. *Also there are a approximately 5 or 6 other receps throughout the house that I haven't grounded yet that are in a similar situation, and I don't want to open that can of worms whereby accepting that the lack of a ground at these receps is a fault that needs to be corrected leads to the request to ground *everything.* *(house was built in 1948, before you ask. *I did update a good bit of the wiring already, just not all of it. *Everything is to the best of my knowledge code compliant at this time, and in fact I got a permit for the rewiring I did on the 2nd floor a while back.) * * SO. I scanned the page of the NEC (2008 edition, which is what my AHJ is using these days) addressing the replacement of ungrounded receptacles; called the head inspector to confirm that there were no local addendums to the code (he said no) and so I have a case, right? *I just need to demonstrate that the receps are in fact downstream of a GFCI. *Here's where I had a moment of dumbass. *I figured I would just stop by the Local Hardware Sellin' Emporium and get one of those plug in cube testers - kind of like the one I already have but this time the fancy one with the little button on the top to test a GFCI. *That should do it, right? *Well I get it home (not the house for sale, my current temporary residence) and plug it in to a kitchen recep, push the button, GFCI pops. *Then I read the instructions - says it may not work on ungrounded receps. *Of course it wouldn't - it probably just has a resistor that the button inserts between hot and ground so that it allows a current slightly higher than 5 mA @ 120V. *duh! * So the question is - is there a tester available that I could use to demonstrate the principle to someone who's not really clueful about such things that the GFCI really works? *I could use a test lead to connect the ground pin to a faucet or something, but I have a feeling that that wouldn't really help the case that I know what I'm talking about and did a proper job in front of people who aren't really clueful about electricity and have never heard of the NEC... *any ideas? thanks nate Plug your tester into the allegedly-protected outlet. *It will show that it's otherwise properly wired but with a missing ground. *Press the "TEST" button on the GFCI that protects it, it will trip, and the light on the downstream outlet tester will go out. -Bob Right. IF YOU REALLY WANT TO TEST IT - GET A RAT, LARGE MOUSE OR OTHER VERMIN FROM YOUR NATURAL SUURROUNDINGS...TAKE AN EXTENSION CORD AND CUT THE OUTLET PART OFF, SPLICE & ATTACH THE ENDS OF THE TWO WIRES TO TWO SEPERATE NAILS OR SCREWS ON A STICK 1/2 - 3/4 OF AN INCH APART AND PLUG IT IN......THEN...POKE THE RAT WITH THE STICK...MAKE SURE BOTH SCREW OR NSIL HEADS MAKE FULL CONTACT WITH THE VERMINS BODY AND SEE IF THE GFCI TRIPS AND THE RAT SURVIVES. IF YOUR GFCII IS GOOD..YOU SHOULD BE RESTTING IT AND RELRASING THE TEST SUBJECT DAZED BUT BACK TO THE WILDERNESS... BOOWAHAHAHAHA......MAKES FOR A COOL SCHOOL SCIENCE PROJECT TO. PATECUM TGITM |
#3
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+1 testing a GFCI where no ground is available?
On 06/09/2011 10:58 AM, The Ghost in The Machine wrote:
On Jun 9, 10:24 am, wrote: , typed: Nate Nagel wrote: Hi all am looking for a hopefully easy to obtain, not too expensive method of demonstrating that a receptacle is GFCI protected... long story short. Am selling house, got offer. Home inspector came through and wrote up two receptacles as being "ungrounded" despite them actually having the blue stickers on them that said "GFCI Protected - No Equipment Ground" (duh) before you ask, it would be fairly difficult to pull grounds to these boxes, otherwise I'd not be fighting. Also there are a approximately 5 or 6 other receps throughout the house that I haven't grounded yet that are in a similar situation, and I don't want to open that can of worms whereby accepting that the lack of a ground at these receps is a fault that needs to be corrected leads to the request to ground *everything.* (house was built in 1948, before you ask. I did update a good bit of the wiring already, just not all of it. Everything is to the best of my knowledge code compliant at this time, and in fact I got a permit for the rewiring I did on the 2nd floor a while back.) SO. I scanned the page of the NEC (2008 edition, which is what my AHJ is using these days) addressing the replacement of ungrounded receptacles; called the head inspector to confirm that there were no local addendums to the code (he said no) and so I have a case, right? I just need to demonstrate that the receps are in fact downstream of a GFCI. Here's where I had a moment of dumbass. I figured I would just stop by the Local Hardware Sellin' Emporium and get one of those plug in cube testers - kind of like the one I already have but this time the fancy one with the little button on the top to test a GFCI. That should do it, right? Well I get it home (not the house for sale, my current temporary residence) and plug it in to a kitchen recep, push the button, GFCI pops. Then I read the instructions - says it may not work on ungrounded receps. Of course it wouldn't - it probably just has a resistor that the button inserts between hot and ground so that it allows a current slightly higher than 5 mA @ 120V. duh! So the question is - is there a tester available that I could use to demonstrate the principle to someone who's not really clueful about such things that the GFCI really works? I could use a test lead to connect the ground pin to a faucet or something, but I have a feeling that that wouldn't really help the case that I know what I'm talking about and did a proper job in front of people who aren't really clueful about electricity and have never heard of the NEC... any ideas? thanks nate Plug your tester into the allegedly-protected outlet. It will show that it's otherwise properly wired but with a missing ground. Press the "TEST" button on the GFCI that protects it, it will trip, and the light on the downstream outlet tester will go out. -Bob Right. IF YOU REALLY WANT TO TEST IT - GET A RAT, LARGE MOUSE OR OTHER VERMIN FROM YOUR NATURAL SUURROUNDINGS...TAKE AN EXTENSION CORD AND CUT THE OUTLET PART OFF, SPLICE& ATTACH THE ENDS OF THE TWO WIRES TO TWO SEPERATE NAILS OR SCREWS ON A STICK 1/2 - 3/4 OF AN INCH APART AND PLUG IT IN......THEN...POKE THE RAT WITH THE STICK...MAKE SURE BOTH SCREW OR NSIL HEADS MAKE FULL CONTACT WITH THE VERMINS BODY AND SEE IF THE GFCI TRIPS AND THE RAT SURVIVES. IF YOUR GFCII IS GOOD..YOU SHOULD BE RESTTING IT AND RELRASING THE TEST SUBJECT DAZED BUT BACK TO THE WILDERNESS... BOOWAHAHAHAHA......MAKES FOR A COOL SCHOOL SCIENCE PROJECT TO. PATECUM TGITM I'd be tempted to do that to the inspector, but I dunno if that'd be politically advisable Apparently the buyers have agreed to sign the contingency removal with the changes I put in, so the only thing I'm not going to be doing myself is a few small plumbing items, and hopefully this whole sordid GFCI issue will be behind us. According to my realtor, who heard from their realtor, who heard from the buyers (why can't I just talk directly to these people?) the inspector didn't notice the GFCI in the location that I described; in his defense, it is close to a window w/ floor length curtains. But still, the blue stickers should have made him look for it IMHO (unless he assumed that it was on the same ckt. as the GFCI on the counter for the dedicated 20A kitchen circuit... only got one, sadly.) nate -- replace "roosters" with "cox" to reply. http://members.cox.net/njnagel |
#4
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+1 testing a GFCI where no ground is available?
Nate Nagel wrote:
Apparently the buyers have agreed to sign the contingency removal with the changes I put in, so the only thing I'm not going to be doing myself is a few small plumbing items, and hopefully this whole sordid GFCI issue will be behind us. According to my realtor, who heard from their realtor, who heard from the buyers (why can't I just talk directly to these people?) the inspector didn't notice the GFCI in the location that I described; in his defense, it is close to a window w/ floor length curtains. But still, the blue stickers should have made him look for it IMHO (unless he assumed that it was on the same ckt. as the GFCI on the counter for the dedicated 20A kitchen circuit... only got one, sadly.) nate That's excellent that it all worked out. Thanks for posting a follow-up. |
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