disconnecting means

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petersonra

petersonra

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Northern illinois
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Semi-retired engineer
is one permitted to have an outside disconnecting means in the service conductors prior to the place where a service conductor is grounded?
 
NO.
That would make it the service.
part VI sec 230 shows article 250

Why would you not want to make it disconnect/overcurrent/Service?
 
I'll say no.

(B) Main Bonding Jumper. For a grounded system, an unspliced main bonding jumper shall be used to connect the equipment grounding conductor(s) and the service-disconnect enclosure to the grounded conductor within the enclosure for each service disconnect in accordance with 250.28.
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petersonra said:
is one permitted to have an outside disconnecting means in the service conductors prior to the place where a service conductor is grounded?
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I'll say YES just to be different. :grin: How about the meter "disconnect" permitted on the supply side of the service disconnect as per 230.82(3) ?
 
wbalsam1 said:
I'll say YES just to be different. :grin: How about the meter "disconnect" permitted on the supply side of the service disconnect as per 230.82(3) ?
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You would have to do your grounding there it is your first disconnect means.
 
5

5

Nope, unless you mean latter (opposite prior) as in the service disconnect enclosure, 250.24
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I think this is an interesting question, it is not something we necessarily think about on a regular basis.
The NEC requires the first means of service diconnecting means to be where grounding is provided.

My question to peter is, will there be a different (additional means) disconnect installed after your other disconnecting means outside?
 
Pierre C Belarge said:
I think this is an interesting question, it is not something we necessarily think about on a regular basis.
The NEC requires the first means of service diconnecting means to be where grounding is provided.

My question to peter is, will there be a different (additional means) disconnect installed after your other disconnecting means outside?
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I tend to think of it opposite as in bring the grounding to the disconnect but then you have to isolate/insulate grounds/neutrals past the main.
 
quogueelectric said:
You would have to do your grounding there it is your first disconnect means.
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Not permitted to by serving utility. Poco will not allow service grounding connection at CT enclosures, meter enclosures, and other locations that are "sealed" since they are considered "not accessible". :)
 
tryinghard said:
Nope, unless you mean latter (opposite prior) as in the service disconnect enclosure, 250.24

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Nice diagram , But I don't see the case for the first disco not to have the GEC.

I don't see the issue to have a disconnect outside with the meter (meter w/main) and all the branch breakers in the Dry full height basement or garage. This allows for service during bad weather or cold nights. I the old day's they POCO allowed the meter outside with no Disco. Now they frown on it.
Am I missing something?
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wbalsam1 said:
The term "accessible" comes into play through 250.24(A)(1).
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I am not sure I follow. We usually put the GEC to the Gr. rod in the meter base and the GEC to the water pipes in the first disco. No problem with poco here.
 
Never seen that done her or in nearby states. Wha you seem to do seems like it could present different ground paths.
I was always under the knowledge that the GEC's must originate at the same point.
I suppose I could be wrong
 
Sierrasparky said:
Never seen that done her or in nearby states. Wha you seem to do seems like it could present different ground paths.
I was always under the knowledge that the GEC's must originate at the same point.
I suppose I could be wrong
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I do not believe there is anything in the nec that says both have to terminate in the same enclosure.
 
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