[AT] grounds

[charlie hill]

Warren, Carl and others,  Let me stir the pot a bit more for the sake of 
trying to learn something.  Using your mobile home example; what would be 
the harm of adding a seperate earth ground rod to the mobile home panel IF 
it were also bonded in with the ground wire in the 4 wire cable.  It seems 
to me that the two ground would then work together with any potential 
difference equalized through the ground wire in the 4 wire cable.  Wouldn't 
that create sort of a ground grid for the whole complex if it involves 
several buildings or structures?

Thanks

Charlie
----- Original Message ----- 
From: "Mogrits" <mogrits at gmail.com>
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Sent: Wednesday, December 19, 2007 1:20 AM
Subject: Re: [AT] grounds


>> cgogol at twcny.rr.com writes:
>>
>> The feed  from there to the subpanel in the basement is 4 wire (two
>> hot, a neutral  and one connected to the ground network).  Then the added
>> feed from  that subpanel (and any subsequent subpanel) is also 4
>> wire.  Maybe
>>
>> this is the reason additional attachments to earth ground at
>> subpanels are
>> not desired / required.
>>
>>
>>
>> Carl,
>>
>> I believe that is correct. See my reply and quote in the answer
>> to  Dudley.
>>
>> Gary
>
> I'm certain the number of conductors figures into the equation. I ran
> four-conductor wire upon his advice, as stated, with no ground rod at the
> shop. Back then (6-7yrs ago) the cost of the wire wasn't as big an issue.
>
> I used 4-conductor mobile home service wire. I think the practice is 
> similar
> where it deals with a mobile home. After all, the building/MH is separate
> from the sevice and the inside panel is merely a distribution panel. They
> don't require a separate ground rod for the interior panel in a mobile 
> home,
> only one at the service.
>
> Warren
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