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Djelite

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Electrician
Service grounding is only done by utility at the service. Grounding at first disconnect is equipment grounding only. If you have a SDS the grounding at that point is system grounding, correct?
 
The supply system is grounded, connected to earth, both by the utility and by the electrical contractor. The connection to earth really has nothing to do with equipment grounding.

The grounding connection to a grounding electrode installed by the electrical contractor is made within in the service equipment enclosure or any point on the service entrance neutral conductor on the line side of the service equipment.
 
don_resqcapt19 said:
The supply system is grounded, connected to earth, both by the utility and by the electrical contractor. The connection to earth really has nothing to do with equipment grounding.

The grounding connection to a grounding electrode installed by the electrical contractor is made within in the service equipment enclosure or any point on the service entrance neutral conductor on the line side of the service equipment.
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I dont think you understood my question. Thank you
 
Djelite said:
I dont think you understood my question. Thank you
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Was really commenting on where you said "Service grounding is only done by utility at the service", and pointing out that is not correct.

As far as your question, any grounded system, no mater what the supply is has a system grounding point or points.
 
The only point where the grounded & grounding conductors are at the same potential is at the main service, after that they are always separated.
 
don_resqcapt19 said:
Was really commenting on where you said "Service grounding is only done by utility at the service", and pointing out that is not correct.

As far as your question, any grounded system, no mater what the supply is has a system grounding point or poinyes you’re correct
don_resqcapt19 said:
Was really commenting on where you said "Service grounding is only done by utility at the service", and pointing out that is not correct.

As far as your question, any grounded system, no mater what the supply is has a system grounding point or points.
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thats correct. Service grounding usually do
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don_resqcapt19 said:
Was really commenting on where you said "Service grounding is only done by utility at the service", and pointing out that is not correct.

As far as your question, any grounded system, no mater what the supply is has a system grounding point or points.
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Correct, but thats when you have an in house SDS if im not mistaking. If you get a chance check out mike holts 2017 bonding and grounding 250.24(video). Thats where my question came from
 
Per Section 250.24(A)(1) three locations where it permits the grounding electrode conductor to be connected to the ground service conductor:
(1) At load end of service drop (2) In accessible meter enclosure (3) In Service disconnecting means.
 
mtnelect said:
Per Section 250.24(A)(1) three locations where it permits the grounding electrode conductor to be connected to the ground service conductor:
(1) At load end of service drop (2) In accessible meter enclosure (3) In Service disconnecting means.
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That wasnt the question
 
don_resqcapt19 said:
Try posting the question you want to ask....nothing that you have posted makes any sense to mein that case stop reading and or posting responces to my questions
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don_resqcapt19 said:
Try posting the question you want to ask....nothing that you have posted makes any sense to me.
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In that case stop reading and or responding to my questions......... read again slowly
 
Try to ask the question you want answered again, so far you have everybody wondering what you're talking about. BTW, many of us have not watched Mikes training videos and you might be better off going to the contacts on his web page instead of on the forums.
 
Thats fine . I mentioned mike holts video so you know where the question was coming from. If you havent seen the video thats fine. If you don’t understand the question thats fine and if the answer is not the correct answer that too is fine. Its not that big of a deal
 
I watched the video ... On single phase you connect the ground and grounding conductor together at the main service only. On three phase you must also bring the utility ground conductor, which is combined with the uninsulated support wire from the utility pole. You must go to table 250.122 and size the grounding conductor and connect it from the service head to main three phase panel equipment bonding terminal. This will provide an electrical path back to the panel if there is a ground fault on any connected load. You should use a white colored wire with a green tape to identify it as an equipment grounding conductor.
 
mtnelect said:
I watched the video ... On single phase you connect the ground and grounding conductor together at the main service only. On three phase you must also bring the utility ground conductor, which is combined with the uninsulated support wire from the utility pole. You must go to table 250.122 and size the grounding conductor and connect it from the service head to main three phase panel equipment bonding terminal. This will provide an electrical path back to the panel if there is a ground fault on any connected load. You should use a white colored wire with a green tape to identify it as an equipment grounding conductor.
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Correction: Use Table 250.66
 
Djelite said:
Thats fine . I mentioned mike holts video so you know where the question was coming from. If you havent seen the video thats fine. If you don’t understand the question thats fine and if the answer is not the correct answer that too is fine. Its not that big of a deal
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No one is going to go dig up a video....if you want to ask a question, just ask a question....no one has any idea of what you are trying to figure out.
There was no question posted that any one could understand.

If you don't want to ask a question in a way that readers know what you are asking about, don't bother asking.
 
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