service ground

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buckofdurham said:
I was thinking 4 or bigger.
But as you are saying, I can run black #8 to my h20 ground ??
How long have I been doing extra work stripping my 1/0 etc...??

Even had an inspector make an other contractor I know change his # 4 h20 grd. to green or strip it.
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I talked with an EC at Hunt's 2 weeks ago and he said the same thing. He has been stripping his #2 copper for years. He was very happy to know he didn't need to do this any more.
 
fisbn said:
alllriiight
I have 2 2oo amp panels and ran the #4 from the meter/disconnect.I was wondering if it was a violation to run 2 #4s so i don;t have to rip it out (and add another)and lose money
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Seems odd but I think that would be a violation. You can, however, run a #4 to each disconnect and be in compliance.
 
Maybe this from the handbook will help?

GECtaps.JPG
 
Dennis Alwon said:
No-- if you had two 200 amp panels then you would find the cir mil of the 2 sets of se conductors, not the poco wire.

So if you have 3/0 you would look it up in the Table , then double it and see what size it is equivalent to. I did this in a post in this thread.
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I'm talking about the panel that is made by SqD that is one box containing the meter on the left side ( UG feed ) and two 200 amp breakers on the right side. One breaker is for a feeder and the other feeds a distribution buss in the panel. All in one box, no assembly required.
In this type of box would you not use the POCO service laterals to size the ground wire. ?


Not the 2 panel boxes and separate meter pan set up.
 
acrwc10 said:
I'm talking about the panel that is made by SqD that is one box containing the meter on the left side ( UG feed ) and two 200 amp breakers on the right side. One breaker is for a feeder and the other feeds a distribution buss in the panel. All in one box, no assembly required.
In this type of box would you not use the POCO service laterals to size the ground wire. ?


Not the 2 panel boxes and separate meter pan set up.
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Then I think you need to use 1/0 as stated in note 2 of Table 250.66
 
Dennis Alwon said:
Then I think you need to use 1/0 as stated in note 2 of Table 250.66
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I think you may be correct. My thinking was if you use a panel that is much larger then the calculated load ( say a 600 amp panel on a 200 amp load ) that the POCO will pull the under ground service laterals based on 200 amp, and it would seem logical to base the size of the grounding conductor on the same calculation, and not the internal conductors or buss sizing inside the panel that feeds from the meter to the main breaker. At the price of wire if you have a long run it seems wise to run what is needed and not drastically over size it. :smile:
 
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