Shared Neutrals

[iwire]

Re: Shared Neutrals

Steve that may be what I get out in the field, I install whatever the engineer asked for in the specs.

So it is posable that the 225 amp panels I get have a 450 amp neautral bar but I kind of doubt it. I think that would stand out.

On the other issue, how or why would you call that a feeder?

Bob

 

[don_resqcapt19]

Re: Shared Neutrals

Square D does have 200% rated neutral buss available as an option. Look at page 7 of this SquareD document.
Don

 

[brian john]

Re: Shared Neutrals

BATCH:

How many Infra Red photos would you like me to post with two conductors of the same phasse sharing a common nueutral and the neutral is overloaded, (all conductors of the same size).

 

[iwire]

Re: Shared Neutrals

Don I don't doubt that these are available, I just doubt that is what I am receiving in the field.

I think a 450 amp neutral bar would be noticeably different from the standard 225 amp neutral bar.

 

[steve66]

Re: Shared Neutrals

Like I said, I was only half serious about calling a "shared" neutral a feeder. But that is what a feeder does. It carries the "shared" current of more than one branch circuit. And if you size the neutral like a feeder, it won't overheat any more than a feeder would.

Once again, half serious. I'm ignoring OCP, I'm not saying its allowed by the code, & I'm not saying its a good idea.

Steve

 

[cripple]

Re: Shared Neutrals

215.4 Feeders with Common Neutral.
(A) Feeders with Common Neutral. Two or three sets of 3-wire feeders or two sets of 4-wire or 5-wire feeders shall be permitted to utilize a common neutral.
(B) In Metal Raceway or Enclosure. Where installed in a metal raceway or other metal enclosure, all conductors of all feeders using a common neutral shall be enclosed within the same raceway or other enclosure as required in 300.20. :roll: