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Re: [GMCnet] First Post - Wiring 78 Royals Neutral Ground short trips GFI [message #323293 is a reply to message #323283]

Mon, 04 September 2017 11:45

johnd01

Messages: 354
Registered: July 2017
Location: Sacrameot

Karma:

Senior Member

GFI trips if there is an alternate path to the ground beside the neutral
wire. It does not have to be "hard", just some stray leakage current will
do it. It can be open DC but "shorted*" AC. If it is shorted DC it is
easier to trace. Put a DC power supply between ground and neutral and
measure the current. Some times it is better to burn up the wire between
the supply and the short just to see where the problem is. If you have
current flowing you can measure the voltage drop in the wire involved. If a
section of wire has a voltage drop it is in the path and if it does not
then it is not in the path. At the end of the path, you should find the
ground fault. For testing purposes, the system should be able to have 300
volts DC between the 2 grounds with much less than 0.001 amps of DC
current.

* shorted in this case is on the order > 0.001 amps AC at 120 volts.
Anyone disagree? If you do this be very careful.
I have used this kind of method to find leakage currents as low as
0.000,000,1 amps in circuit boards.

On Mon, Sep 4, 2017 at 6:49 AM, Richard Denney wrote:

> Terry,
>
> When getting power from the campground, a bonded neutral on the coach can
> provide an alternative path to ground if there is a fault in the campground
> plug. That alternative ground will include the coach body, and one could be
> electrocuted standing outside an leaning on the coach.
>
> If a GFCI outlet is tripping, that means current is leaking from hot to
> ground instead of going through neutral. That is evidence of a fault right
> there. All the current should go back to the campground's bonded ground,
> not find a leak somewhere else.
>
> Rick "not ignoring the signs" Denney
>
> On Sun, Sep 3, 2017 at 9:33 PM Terry wrote:
>
>> "there should not be a ground/neutral connection when you are plugged
> into
>> shore power."
>>
>> How can there not be a connection when they are tied together in the
> shore
>> power circuit breaker panel?
>> --
>> Terry Kelpien
>>
>> ASE Master Technician
>>
>> 73 Glacier 260
>>
>> Smithfield, Va.
>>
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
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>>
> --
> Rick Denney
> 73 x-Glacier 230 "Jaws"
> Off-list email to rick at rickdenney dot com
> _______________________________________________
> GMCnet mailing list
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>

--

*John Phillips*
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Johnd01 John Phillips Avion A2600 TZE064V101164 Rancho Cordova, CA (Sacramento)

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[Message index]

		First Post - Wiring 78 Royals Neutral Ground short trips GFI By: Aaron on Fri, 01 September 2017 11:25
		Re: First Post - Wiring 78 Royals Neutral Ground short trips GFI By: lqqkatjon on Fri, 01 September 2017 12:37
		Re: [GMCnet] First Post - Wiring 78 Royals Neutral Ground short trips GFI By: Mr ERFisher on Fri, 01 September 2017 12:47
		Re: First Post - Wiring 78 Royals Neutral Ground short trips GFI By: Aaron on Fri, 01 September 2017 15:45
		Re: First Post - Wiring 78 Royals Neutral Ground short trips GFI By: mghamms on Fri, 01 September 2017 12:55
		Re: [GMCnet] First Post - Wiring 78 Royals Neutral Ground short trips GFI By: powerjon on Fri, 01 September 2017 14:49
		Re: [GMCnet] First Post - Wiring 78 Royals Neutral Ground short trips GFI By: Richard Denney on Fri, 01 September 2017 15:06
		Re: [GMCnet] First Post - Wiring 78 Royals Neutral Ground short trips GFI By: Ken Henderson on Fri, 01 September 2017 15:36
		Re: [GMCnet] First Post - Wiring 78 Royals Neutral Ground short trips GFI By: Aaron on Fri, 01 September 2017 20:29
		Re: [GMCnet] First Post - Wiring 78 Royals Neutral Ground short trips GFI By: Ken Henderson on Fri, 01 September 2017 21:38
		Re: [GMCnet] First Post - Wiring 78 Royals Neutral Ground short trips GFI By: Aaron on Sat, 02 September 2017 09:09
		Re: [GMCnet] First Post - Wiring 78 Royals Neutral Ground short trips GFI By: Ken Henderson on Sat, 02 September 2017 10:19
		Re: [GMCnet] First Post - Wiring 78 Royals Neutral Ground short trips GFI By: Hal StClair on Sat, 02 September 2017 15:28
		Re: [GMCnet] First Post - Wiring 78 Royals Neutral Ground short trips GFI By: JShot on Sat, 02 September 2017 21:33
		Re: [GMCnet] First Post - Wiring 78 Royals Neutral Ground short trips GFI By: Aaron on Sun, 03 September 2017 09:09
		Re: First Post - Wiring 78 Royals Neutral Ground short trips GFI By: Aaron on Fri, 01 September 2017 15:38
		Re: First Post - Welcome By: Matt Colie on Fri, 01 September 2017 18:43
		Re: First Post - Welcome By: Aaron on Fri, 01 September 2017 20:33
		Re: First Post - Wiring 78 Royals Neutral Ground short trips GFI By: JohnL455 on Fri, 01 September 2017 21:39
		Re: First Post - Wiring 78 Royals Neutral Ground short trips GFI By: Aaron on Sat, 02 September 2017 08:41
		Re: First Post - Wiring 78 Royals Neutral Ground short trips GFI By: Scott Nutter on Sat, 02 September 2017 09:06
		Re: First Post - Wiring 78 Royals Neutral Ground short trips GFI By: Aaron on Sun, 03 September 2017 09:23
		Re: First Post - Wiring 78 Royals Neutral Ground short trips GFI By: Scott Nutter on Sun, 03 September 2017 12:35
		Re: First Post - Wiring 78 Royals Neutral Ground short trips GFI By: Bullitthead on Sun, 03 September 2017 20:32
		Re: First Post - Wiring 78 Royals Neutral Ground short trips GFI By: Aaron on Sun, 03 September 2017 23:07
		Re: [GMCnet] First Post - Wiring 78 Royals Neutral Ground short trips GFI By: powerjon on Mon, 04 September 2017 08:16
		Re: [GMCnet] First Post - Wiring 78 Royals Neutral Ground short trips GFI By: powerjon on Sun, 03 September 2017 23:01
		Re: [GMCnet] First Post - Wiring 78 Royals Neutral Ground short trips GFI By: Richard Denney on Mon, 04 September 2017 08:49
		Re: [GMCnet] First Post - Wiring 78 Royals Neutral Ground short trips GFI By: johnd01 on Mon, 04 September 2017 11:45
		Re: First Post - Wiring 78 Royals Neutral Ground short trips GFI By: JohnL455 on Sun, 03 September 2017 09:22
		Re: First Post - Wiring 78 Royals Neutral Ground short trips GFI By: JohnL455 on Sun, 03 September 2017 12:52
		Re: First Post - Wiring 78 Royals Neutral Ground short trips GFI By: Scott Nutter on Sun, 03 September 2017 13:06
		Re: [GMCnet] First Post - Wiring 78 Royals Neutral Ground short trips GFI By: powerjon on Sun, 03 September 2017 14:09
		Re: First Post - Wiring 78 Royals Neutral Ground short trips GFI By: Bill Van Vlack on Mon, 04 September 2017 14:26
		Re: First Post - Wiring 78 Royals Neutral Ground short trips GFI By: Aaron on Mon, 04 September 2017 21:44
		Re: First Post - Wiring 78 Royals Neutral Ground short trips GFI By: Bill Van Vlack on Tue, 05 September 2017 13:36
		Re: [GMCnet] First Post - Wiring 78 Royals Neutral Ground short trips GFI By: johnd01 on Tue, 05 September 2017 14:00
		Re: First Post - Wiring 78 Royals Neutral Ground short trips GFI By: Bill Van Vlack on Tue, 05 September 2017 14:56
		Re: First Post - Wiring 78 Royals Neutral Ground short trips GFI By: thesmith on Tue, 05 September 2017 21:59
		Re: [GMCnet] First Post - Wiring 78 Royals Neutral Ground short trips GFI By: k2gkk on Wed, 06 September 2017 04:01
		Re: First Post - Wiring 78 Royals Neutral Ground short trips GFI By: Aaron on Sun, 24 September 2017 19:47
		Re: First Post - Wiring 78 Royals Neutral Ground short trips GFI By: Scott Nutter on Sun, 24 September 2017 21:18
		Re: [GMCnet] First Post - Wiring 78 Royals Neutral Ground short trips GFI By: dan molnes on Sun, 24 September 2017 21:56
		Re: First Post - Wiring 78 Royals Neutral Ground short trips GFI By: Aaron on Mon, 25 September 2017 08:50
		Re: First Post - Wiring 78 Royals Neutral Ground short trips GFI By: Bullitthead on Tue, 26 September 2017 00:19
		Re: First Post - Wiring 78 Royals Neutral Ground short trips GFI By: jhbridges on Tue, 26 September 2017 08:48

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