parallel feeder lengths

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i am talking less than 1 foot on a 1500 hundred ft run. a "know it all is in a tizzy" i want make sure he is overeacting
 
Re: parallel feeder lengths

ericlau said:
What tolerance do is there for parallel feeders to have slightly different lengths
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We have to define "slightly different lengths".

If you mean the difference in length is that A-B-C terminations are at the top of the panel, and N-G terminations are at the bottom...that's ok,

If you mean the difference in length is A1-B1-C1 are in one run that is 40' long and A2-B2-C2 are in a seperate run that is 80' long...that's a problem.
 
ericlau said:
i am talking less than 1 foot on a 1500 hundred ft run. a "know it all is in a tizzy" i want make sure he is overeacting
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1 foot?

Not even an issue.
That is easily lost/gained in radii of bends, termination location, where conduits/run enters the enclosure, etc.

A "non-issue".
 
i am talking less than 1 foot on a 1500 hundred ft run. a "know it all is in a tizzy" i want make sure he is overeacting
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Eric
Just for information is the parallel circuit 1500 ft or is that the total wire length? In any case 1 ft is insignificant.
 
celtic said:
Pierre C Belarge said:
It looks like we have a new sheriff in town :wink:
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I've only been "deputized"...and it's probably "probationary"....LOL
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I only nominated you for deputy, I don't have authority to deputize.
 
peter d said:
So Don, based on your calcs even a 1' difference can be significant!
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1' over 40' may have an impact....do the math on 1500' vs. 1499' and 1501' :)
 
Pierre C Belarge said:
Celtic
Since you live fairly close to me, I am going to take full authority to deputize you as Deputy of the forum. :wink:
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EGADS !!!!

Now I need an "official" looking badge

Guns....when do we get guns?
220487.jpg
 
iwire said:
peter d said:
So Don, based on your calcs even a 1' difference can be significant!
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Sure if one run is 2' while the other is 1' that could be a problem.

1499' vs 1500' not a problem. :)
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Just out of curiosity, let's say you had a connection that short (1' and 2'). Say.... 2 sets of 500 MCM cu. Let's also assume this is a single-phase 120/240-volt circuit, and there is a current flow of 760-amps.

How many amps would be flowing through each wire (assuming all connections are equally good)?
 
If you where asking me I really do not know. :oops:

My first thought is twice as much in one as the other, the same as what you have.

I do not know if it is that simple, I know it is not that simple when you have 3 or more conductors in parallel.
 
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