Feed 600A

[amazing electric]

What is the most economical way to feed 600A 3PH service?

 

[iwire]

Pretty wide open question.

Assuming you need 600 amps of capacity for lowest cost.

3 sets of 250 AL SER.

 

[mdshunk]

Aluminium conductors in PVC or several paralleled 200 amp SER cables.

 

[brian john]

MArc:

What happened to the super conductors you were working on. Seems this would be a better method?

 

[mdshunk]

MArc:

What happened to the super conductors you were working on. Seems this would be a better method?

Huh? You mean "wireless electricity"? I think Tesla took that secret to his grave.

 

[amazing electric]

if i run two sets of 300 kcmil copper for the 600A 3ph, would that comply? Or do i need to reduce ampacity because of more then three conductors in the raceway?

 

[iwire]

if i run two sets of 300 kcmil copper for the 600A 3ph, would that comply?

It could, depending on the calculated load.

Or do i need to reduce ampacity because of more then three conductors in the raceway?

Yes, 80%

Two sets of 90C 300 CU in a single raceway will have a capacity of only 512 amps.

240.4(B) will allow this to be used with a 600 amp breaker, but the calculated load is limited to less then 512 amps.

90C 300 CU has a ampacity of 320 amps.

320 * 2 *.8 = 512

 

[infinity]

if i run two sets of 300 kcmil copper for the 600A 3ph, would that comply? Or do i need to reduce ampacity because of more then three conductors in the raceway?

I'm unsure if any configuration using copper conductors would be the cheapest installation method.

What is the most economical way to feed 600A 3PH service?

 

[jrannis]

I use parallel 500 AL XHHW-2 for 600amp. Should fit nice in 3". But we use 4" PVC. Pulls better. Thats about $20 per foot total.

 

[zog]

Huh? You mean "wireless electricity"? I think Tesla took that secret to his grave.

No, there is a wireless transmission system being tested in CO as we type.

 

[lbwireman]

Link or reference, please?