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#1542 - 05/16/01 10:45 AM Service Parallel Path  
Mike  Offline
Member
Joined: Feb 2001
Posts: 62
Does the electrical utility in your area install a second grounded conductor from their transformer to the service equipment?
I've read some posts on other sites stating such is the case in some areas of the country. Isn't that a CODE VIOLATION? Creating a parallel path from the service equipment back to the transformer. What's up with that? [Linked Image]


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#1543 - 05/16/01 02:20 PM Re: Service Parallel Path  
Anonymous
Unregistered

Why would it be a code violation?
I would call it a good thing.

Parallel conductors per se are not code violations.

If you want to run three wire cable through you house and use two for neutral and one for hot, that is okay.

Parallel conductors are a violation when current can follow a return path that is not parallel to the feed path.


Besides, a parallel path already exists through the earth back to the transformer anyway.


#1544 - 05/16/01 02:53 PM Re: Service Parallel Path  
resqcapt19  Offline
Member
Joined: Nov 2000
Posts: 2,148
IL
Dspark,
What about 310-4???
Don(resqcapt19)


Don(resqcapt19)

#1545 - 05/16/01 03:07 PM Re: Service Parallel Path  
sparky66wv  Offline
Member
Joined: Nov 2000
Posts: 2,236
West Virginia
Hmmm... Good one...!?!

However, I see it as a good thing to provide a redundant GC to prevent the "lost neutral 240 V series" scenario.

Common sense vs. NEC?


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#1546 - 05/16/01 03:49 PM Re: Service Parallel Path  
Mike  Offline
Member
Joined: Feb 2001
Posts: 62
It's not a code violation if all the conductors are paralled. From the stories I read, it's only the GC that's paralled. If the utility insists on a paralled GC, not the ungrounded conductors, all the why to the service equipment. I have a problem with it. IHMO. [Linked Image]


#1547 - 05/16/01 03:53 PM Re: Service Parallel Path  
Anonymous
Unregistered

>What about 310-4???
Doesn't that just confirm that extra neutrals (parallel) are a good thing when used correctly?!?

I mentioned in another thread that 200% neutrals are specified for certain newer installations.
http://www.electrician.com/articles/third.htm

Are you suggesting that these might be illegal?


[This message has been edited by Dspark (edited 05-16-2001).]


#1548 - 05/16/01 03:58 PM Re: Service Parallel Path  
Anonymous
Unregistered

Quote
It's not a code violation if all the conductors are paralled.


I don't believe it is a code violation if only one of the conductors is paralleled.
The intent is that conductors do not have to have the same characteristics.

I can't think of a problem with having parallel neutrals. If you have a problem with them, kindly explain. If you have a hypothetical scenario, that is even better.


#1549 - 05/16/01 04:27 PM Re: Service Parallel Path  
resqcapt19  Offline
Member
Joined: Nov 2000
Posts: 2,148
IL
Dspark,
I miss read the original post. I thought we were talking about paralleling the grounded conductor and an equipment grounding conductor. The is no problem with parallel neutrals.
Don(resqcapt19)


Don(resqcapt19)

#1550 - 05/16/01 04:33 PM Re: Service Parallel Path  
sparky  Offline
Member
Joined: Oct 2000
Posts: 5,311
Dspark,
parrallel all you like, 1/0 & up [Linked Image]

Mike;
other posts have really got in depth with this, if you think about it, a lot of our concerns are addressed by having a
ground(ing) & ground(ed) conductor back to the X-former.
heck ,we gotta do it for a SDS x-former!

[Linked Image]
besides, they don't ( to my knowledge) make 3000 kcmil .....

[This message has been edited by sparky (edited 05-16-2001).]


#1551 - 05/16/01 05:28 PM Re: Service Parallel Path  
Anonymous
Unregistered

>parallel all you like, 1/0 & up
And smaller for neutrals. http://www.electrician.com/articles/third.htm


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