one more shut

[Toros]

Hi
I concluded that 500 MCM is rated for 90c, 430A

So, it is ok to run (3) 3" pvc via under ground
and each with (4) 500 MCM to feed the 1200A main breakers in the service,
we only have to; Terminate both sides through polaris connectors???????

as it was suggested by a forum senior

 

[JFletcher]

Here's the post he may be referencing:

http://forums.mikeholt.com/showthread.php?t=186449&p=1855797#post1855797

Code-wise, yes, you can do as I previously wrote. Logistics wise, or practically speaking, you *may* not have the room to do all that splicing from the Polaris connectors to 3 sets of 600MCM to your breakers/bussbars/discos/etc. and I'm assuming your 4th conductor (neutral) is not counted as a CCC and no further derating, either CCC or temperature-wise, is coming into play. Polaris connectors in those sizes arent cheap, extra j-boxes are... well, extra cost and time, but if you have a long run and have to use copper, I'd find a way to fit them in.

 

[Toros]

Here's the post he may be referencing:

http://forums.mikeholt.com/showthread.php?t=186449&p=1855797#post1855797

Code-wise, yes, you can do as I previously wrote. Logistics wise, or practically speaking, you *may* not have the room to do all that splicing from the Polaris connectors to 3 sets of 600MCM to your breakers/bussbars/discos/etc. and I'm assuming your 4th conductor (neutral) is not counted as a CCC and no further derating, either CCC or temperature-wise, is coming into play. Polaris connectors in those sizes arent cheap, extra j-boxes are... well, extra cost and time, but if you have a long run and have to use copper, I'd find a way to fit them in.

ok