Where did grounding opposite ends of a substation transformer tank originate? Is it just a common utility requirement to ground opposite ends to a grounding electrode?
The NEC requires a low-impedance path to clear a ground fault, but that can be achieved with the ground pad on the tank below the X0 on the secondary.
I thought I recalled seeing a Mike Holt video where he said there is no code that requires the two ground pads on opposite ends of the tank to be grounded, but I can't find it.
The NEC requires a low-impedance path to clear a ground fault, but that can be achieved with the ground pad on the tank below the X0 on the secondary.
I thought I recalled seeing a Mike Holt video where he said there is no code that requires the two ground pads on opposite ends of the tank to be grounded, but I can't find it.