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Re: [GMCnet] First Post - Wiring 78 Royals Neutral Ground short trips GFI [message #323110 is a reply to message #323106] Fri, 01 September 2017 14:49 Go to previous messageGo to previous message
powerjon is currently offline  powerjon   United States
Messages: 2446
Registered: January 2004
Karma:
Senior Member
Mike and all,

The problem is that the neutral and ground came bonded at the terminal strip at the bottom. Because that is the way it worked back in the 70’s. The neutral wires need to be separated from the grounds. You WILL have ground fault trips if left in this configuration. Your breaker box in the motorhome is consider a secondary breaker box as per NEC code they should now be modified to separate the two . Did mine and others in the summer of 2002 as we had a number of rallies at older facilities that had ground faults breaker at the pedestals and had all sorts of problems with GFI Tripping. Suggest that that you leave the grounds where they are and connect all the whites including the big white wire coming in together using a terminal strip and then use tape to insulate that connector so that it does not contact the case of the breaker box or any of the ground wires in the box. I have use one like this.

https://www.lowes.com/pd/Square-D-Load-Center-Ground-Bar-Kit/3364860


If you are not versed in electrically wiring or do not feel comfortable doing the work yourself you should seek the services of qualified electrician. Be safe not sorry!

READ THIS BELOW!

https://diy.stackexchange.com/questions/52696/why-does-a-subpanel-need-separate-ground-and-neutral#52700

At the house I have an outside panel just below the meter that is my master panel. It allows me a manual transfer switch for my generator which isolates the overhead power from the generator and only one can be providing power and it also feed the house circuit breaker box, and the shop and barn breaker box. Both of those are now considered a secondary breaker box and the neutrals and grounds are separated.

J.R. Wright
GMC Great Laker MHC
Newsletter Editor/Publisher
GMCGL Tech Editor
GMC Eastern States Charter Member
GMCMI
78 GMC Buskirk 30’ Stretch
75 GMC Avion (Under Reconstruction)
Michigan


> On Sep 1, 2017, at 1:55 PM, Mike Hamm wrote:
>
> Easy solution don't blue into a gfi outlet. Lots of neutral to ground connections in the GMC as they should be.
> Neutral and ground are bonded in the breaker box.
> --
> 1977 Kingsley 455 as stock as it gets except lots of Ragusa parts
>
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J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
 
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