Posted 5/17/2008 19:39 (#379989 - in reply to #379594) Subject: Re: Electrical :Grounded 3 phase
Power company here has moved away from the open delta and started using corner grounded delta for safety. Looking aside from the voltage on A and B to ground, the reason for the copper pipe is a safety issue to assure the system will always be grounded.
Electrical :Grounded 3 phase
