The Electrical Contractor Network

ECN Electrical Forum
Discussion Forums for Electricians, Inspectors and Related Professionals

Books, Tools and Test Equipment for Electrical and Construction Trades

Register Now!

Register Now!

We want your input!

Featured:
   

2017 NEC and Related
2017 NEC
Now Available!

   
Recent Posts
Industrail Control Panel bonding per 409.108
by sparkyinak
22 minutes 4 seconds ago
Calling all Non-US members!! (Non-US only)
by aussie240
12/07/16 02:39 AM
Photo Upload Tutorial
by DanK
12/06/16 11:35 PM
Sprinklered equipment 26-008
by bigpapa
12/02/16 04:24 PM
On Delay Relay with Auto Reset
by Potseal
12/01/16 09:59 AM
New in the Gallery:
12.5A through 0.75mm˛ flex (just out of curiosity)
Shout Box

Top Posters (30 Days)
gfretwell 13
HotLine1 10
sparkyinak 9
Texas_Ranger 8
Potseal 6
Who's Online
2 registered (LongRunner, sparkyinak), 94 Guests and 4 Spiders online.
Key: Admin, Global Mod, Mod
Page 1 of 3 1 2 3 >
Topic Options
Rate This Topic
#1542 - 05/16/01 07:45 AM Service Parallel Path
Mike Offline
Member

Registered: 02/21/01
Posts: 65
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?

Top
Work Gear for Electricians and the Trades

Work Gear for Electricians and the Trades
Work Gear for Electricians and the Trades
Arc Flash Clothing, Gloves, KneePads, Tool Belts, Pouches, Tool Carriers, etc. etc....

#1543 - 05/16/01 11:20 AM 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.

Top
#1544 - 05/16/01 11:53 AM Re: Service Parallel Path
resqcapt19 Offline
Member

Registered: 11/10/00
Posts: 2209
Loc: IL
Dspark,
What about 310-4???
Don(resqcapt19)
_________________________
Don(resqcapt19)

Top
#1545 - 05/16/01 12:07 PM Re: Service Parallel Path
sparky66wv Offline
Member

Registered: 11/17/00
Posts: 2339
Loc: 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?
_________________________
-Virgil
Residential/Commercial Inspector
5 Star Inspections
Member IAEI

Top
#1546 - 05/16/01 12:49 PM Re: Service Parallel Path
Mike Offline
Member

Registered: 02/21/01
Posts: 65
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.

Top
#1547 - 05/16/01 12:53 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).]

Top
#1548 - 05/16/01 12:58 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.

Top
#1549 - 05/16/01 01:27 PM Re: Service Parallel Path
resqcapt19 Offline
Member

Registered: 11/10/00
Posts: 2209
Loc: 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)

Top
#1550 - 05/16/01 01:33 PM Re: Service Parallel Path
sparky Offline
Member

Registered: 10/18/00
Posts: 5545
Dspark,
parrallel all you like, 1/0 & up

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!


besides, they don't ( to my knowledge) make 3000 kcmil .....

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

Top
#1551 - 05/16/01 02:28 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

Top
Page 1 of 3 1 2 3 >



ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals