kenaslan
Senior Member
- Location
- Billings MT
I am trying to wrap my head around a recent violation an inspector had with an installation.
The main transformer is a 3 phase, 3 wire 14.4KV-480/277V Y-Y. This is for a 3phase 480V system. NO 277V. The inspector wanted both a GEC and a Grounded conductor run to the Service disconnect. Currently there are only the phase conductors and a Grounded Conductor. The Grounded Conductor is bonded to the service Disconnect and from there run to a ground rod.
Do 5 wires need to be run for the Service, or can we use 4?
The main transformer is a 3 phase, 3 wire 14.4KV-480/277V Y-Y. This is for a 3phase 480V system. NO 277V. The inspector wanted both a GEC and a Grounded conductor run to the Service disconnect. Currently there are only the phase conductors and a Grounded Conductor. The Grounded Conductor is bonded to the service Disconnect and from there run to a ground rod.
Do 5 wires need to be run for the Service, or can we use 4?