Paul McNichol
Member
I want to provide an alternate feeder for switch gear that is fed from a corner grounded Delta connected transformer. The alternate feeder would be key interlocked with the switchgear main so that the alternate feeder breaker and the switchgear main could not be closed simultaneously. The alternate feeder is fed from a solidly grounded, wye connected transformer with no neutral loads. Can the ground buses of the two systems be connected via the ground conductor when the alternate feeder breaker is open and the two systems are operating independently?