Balancing conductors

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liquidtite

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Is it code when you have parallel feeders to keep
each conduit with a,b,c nuetral in each conduit .

and if so does this rule apply when nippling
panels together .

i ask this bc I'm cutting in panels that are nippled
together with 3 nipples .

the wire is 600 so in order to make it look nice
idd like to have all the nuetrals in one nipple
and switch up the phases .

So so it's not abc ,n in each nipple .
 
Section 310.4 provides specific information and requirements for paralleling of conductors and should certainly be the first reference that a user would choose for an understanding of the basics for paralleling conductors.
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Each phase and each neutral or grounded conductor must be present within each separate raceway, auxiliary gutter, cable tray, cable bus assembly, cable or cord. For example, in an installation where three sets of 3/0 AWG conductors are paralleled for each phase and the neutral of a three-phase, four-wire system, there will be one 3/0 AWG for Phase A, one for Phase B, one for Phase C, and one for the neutral in each of three raceways.
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[FONT=inherit !important]There is an exception to this general rule located in 300.3(B)(1) that permits conductors installed in nonmetallic raceways run underground to be arranged as isolated phase installations with all of one phase in one conduit, all of another phase in another conduit, all of the final phase in one conduit, with all of the neutrals in the final conduit.[/FONT]
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http://www.ecmag.com/section/systems/conductors-connected-parallel
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Putting each phase into a separate conduit creates problems with strong magnetic forces. If you are using metal conduit, the magnetic waves will heat the conduit. Putting all phases in each conduit causes the magnetic forces to cancel each other out.
 
Coppersmith said:
Putting each phase into a separate conduit creates problems with strong magnetic forces. If you are using metal conduit, the magnetic waves will heat the conduit. Putting all phases in each conduit causes the magnetic forces to cancel each other out.
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Ok got you thank you for your reply.

i cut one in yesterday theirs two nipples

panel one and panel two .

panel two has feed through lugs on it feeding panel
two .

so I did abc and two nuetrals in one nipple

and abc in the second nipple , I order to cut in the nuetrals
making it look nice I didn't have a lot of room how it was nippled.
 
liquidtite said:
Ok got you thank you for your reply.

i cut one in yesterday theirs two nipples

panel one and panel two .

panel two has feed through lugs on it feeding panel
two .

so I did abc and two nuetrals in one nipple

and abc in the second nipple , I order to cut in the nuetrals
making it look nice I didn't have a lot of room how it was nippled.
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If you have any line to neutral loads, there can still be unbalanced current with both neutrals in the same nipple. Maybe not a serious heating problem, but is definitely a technical violation of the Code that an inspector could tag you for.
 
liquidtite said:
Ok got you thank you for your reply.

i cut one in yesterday theirs two nipples

panel one and panel two .

panel two has feed through lugs on it feeding panel
two .

so I did abc and two nuetrals in one nipple

and abc in the second nipple , I order to cut in the nuetrals
making it look nice I didn't have a lot of room how it was nippled.
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You need to move the neutral to be with is feeders or you will cause issues in the future.

Sent from my SM-N900V using Tapatalk
 
How long are the nipples? If the panels are next to each other then I would just cut in a window or instead of nipples I would use a wireway between the two then you can orient the conductors anyway you want.
 
One of the best panel connecting methods I've found uses Carlon Terminal Adapters & couplings,

panel coupling 2.jpg
panel coupling 1.jpg
panel coupling 3.png
 
kwired said:
That method doesn't "self bond" the two enclosures together in any way at all:)

I do agree with the suggestion of "window" between enclosures butted against one another or a wireway between enclosures if you can't get a large enough raceway to fit.
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nope, but a short piece of wire can easily bond them. The terminal adapters provide a nice smooth transition in the panel with minimal intrusion. Might not be the best in your eyes but I have found it to be a great method.
 
augie47 said:
nope, but a short piece of wire can easily bond them. The terminal adapters provide a nice smooth transition in the panel with minimal intrusion. Might not be the best in your eyes but I have found it to be a great method.
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Just trying to rough you up a little, no harm intended.:) I have done that and is a great method sometimes.
 
augie47 said:
nope, but a short piece of wire can easily bond them. The terminal adapters provide a nice smooth transition in the panel with minimal intrusion. Might not be the best in your eyes but I have found it to be a great method.
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You still have to have all your hots and neutrals together in the same hole.

Sent from my SM-N900V using Tapatalk
 
windingelectric said:
You still have to have all your hots and neutrals together in the same hole.

Sent from my SM-N900V using Tapatalk
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Yes you would need to have each set of phase conductors, neutral and EGC going through each corresponding nipple. That's why I would not use nipples if I wanted to keep the conductors grouped together by phase.
 
infinity said:
How long are the nipples? If the panels are next to each other then I would just cut in a window or instead of nipples I would use a wireway between the two then you can orient the conductors anyway you want.
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8" nipples

yea i like the window idea but I like having some space in between panels .

wire wat would be nice but you know Forman fastest done usually trumps it .

thanks for replys
 
liquidtite said:
8" nipples

yea i like the window idea but I like having some space in between panels .

wire wat would be nice but you know Forman fastest done usually trumps it .

thanks for replys
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Fastest done isn't good enough if there are code violations though.
 
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