wire sizing

[ajengin]

I have a utility transformer to an 800 ampere fused service. IS the correct wire size 2 sets #600 awg at 75 celsius.

please inform if this is correct.
thanks

 

[cpal]

Re: wire sizing

copper or aluminum??

Premises or utility wiring??

Charlie

 

[kfenn]

Re: wire sizing

For a installation point of view, I typically do not use anything lager then 500 mcm. It is to hard to handle in the field.

 

[ajengin]

Re: wire sizing

COPPER AND IT WILL CONNECT THE PAD MOUNTED TRANSFORMER TO 800 AMP DISCONNECT

 

[jtester]

Re: wire sizing

The only other question is " What's the load?" You could run paralleled 500 KCMIL if the load was under 760 amps, but would need paralleled 600 if the load was over 760.
Jim T

 

[cpal]

Re: wire sizing

2-sets of 600kCmil is sufficent to supply 840A assuming two seperate raceawys. If all of the underground conductors are in the same raceway 310.15(B) (2) will apply for .
derating.

Know why are you delivering 840A capacity
there are numerous senarios that may work 4 sets of 3/0 200A per phase . This depends on the equipment and purchased lug configuration.

Does the feeder demand on the service require 800A ??

Charlie