Ground Rod size

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wireday said:
Utility companies don't have to comply with NEC, in particular on their side of the demarc point.

Is this true?
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See 90.2(B), if you haven't already.

Also, NEC typically only applies in jurisdictions that officially adopt it into law, sometimes with amendments or creates their own code with a lot of the base coming from NEC. Not an expert on California electrical code, but from what I have read from this site is primarily based on NEC, but is it's own publication and has some differences, other areas may have similar codes.
 
If the broadband ground block is bonded to GES, Is there ever a reason to have a ground block 30 feet inside the building as well.
 
Would it be compliant to install a IBT on the out side of our building in the following manner. We have manhole with GES 10 feet from building.would like to have #6 copper come from man hole GES ten feet to 8 foot ground rod at outside of building.One acorn nut at the ground rod, pass through the #6 copper up a couple feet to a IBT mounted to our building ?
 
trying to leave a place for any other utility that might come along, It looks like a ground rod is acceptable as well for everyone to attach to.
 
wireday said:
Would it be compliant to install a IBT on the out side of our building in the following manner. We have manhole with GES 10 feet from building.would like to have #6 copper come from man hole GES ten feet to 8 foot ground rod at outside of building.One acorn nut at the ground rod, pass through the #6 copper up a couple feet to a IBT mounted to our building ?
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wireday said:
trying to leave a place for any other utility that might come along, It looks like a ground rod is acceptable as well for everyone to attach to.
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An IBT has to comply with, among other conditions, the following:
(4) At the service equipment, be securely mounted and
electrically connected to an enclosure for the service
equipment, to the meter enclosure, or to an exposed
nonflexible metallic service raceway, or be mounted at
one of these enclosures and be connected to the enclosure
or to the grounding electrode conductor with a
minimum 6 AWG copper conductor

(5) At the disconnecting means for a building or structure,
be securely mounted and electrically connected to the
metallic enclosure for the building or structure disconnecting
means, or be mounted at the disconnecting
means and be connected to the metallic enclosure or to
the grounding electrode conductor with a minimum
6 AWG copper conductor.
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Refer to 250.94 for complete section text.
 
I've always been told that for a ground rod on a service all we would ever need is a #6 copper, Is that correct. I want to add another ground rod to our GES. Looking at 250.66 Im not sure what wire to use.
 
Is the fact that the broadband box is mounted to our metal building siding an issue with grounding either to building steel or our outside ground rod?
 
wireday said:
I've always been told that for a ground rod on a service all we would ever need is a #6 copper, Is that correct. I want to add another ground rod to our GES. Looking at 250.66 Im not sure what wire to use.
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At some point someone has determined that an individual rod can not dissipate any more energy into the earth then a 6 AWG copper conductor can deliver to it.
 
wireday said:
Is the fact that the broadband box is mounted to our metal building siding an issue with grounding either to building steel or our outside ground rod?
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This is how we install here the pipe is going to the water main the 2 conductors coming out of the top go to the grounded conductor bar in each panel . A total of 2 panels that last wire goes straight through the ibs no splice to a ground rod
26227633ebce0f859fb7b944512d7fa8.jpg


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nickelec said:
This is how we install here the pipe is going to the water main the 2 conductors coming out of the top go to the grounded conductor bar in each panel . A total of 2 panels that last wire goes straight through the ibs no splice to a ground rod
26227633ebce0f859fb7b944512d7fa8.jpg


Sent from my SM-G950U using Tapatalk
Click to expand...
Here's a picture where you can see the whole thing
a876dc2bf368d0b032c2256cd1c99a48.jpg


Sent from my SM-G950U using Tapatalk
 
Have another question regarding the broadband attaching to our building GES. CATV company has there 5 foot ground rod driven just below there panel.We would like for them to do away with the ground rod and run there bond from there box to our building steel. My question is can they if they choose run from there 5 foot ground rod to building steel. Im thinking it would have to be #6 copper.
And they would leave there wire from the box to there ground rod as well. Thanks
 
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