Transfer switch

[wannabe]

I have a 1000 amp MDP. Iam paralleling 3 sets of 500MCM. I am not switching the "neutral". As far as running a 2/0 for equipment ground.Do I have to put one (a ground) in each of the 3 pipes I have coming in?

 

[iwire]

Re: Transfer switch

I hope the 3 sets of 500s are copper, if they are AL your coming up short of 1000 amps.

3 sets of 400 Kcmil CU or 3 sets of 600 Kcmil AL would be adequate.

If you choose to run a grounding conductor than yes one 2/0 must be installed in each conduit.

250.122(F)

For what its worth if the circuit has a neutral it must be run in the raceways with the other conductors switched or not.

300.3(B)