If you only need 480 three phase and have no need for 277 volts you can get a 208 delta x 480 delta transformer and bond phase B to ground making it a corner grounded delta system. It is legal but not very popular due to the fact that you will have 480 volts between phase A and C to ground.I need to step up from 3 phase 208 to 480. Everything I find is Delta on the 480 side but my understanding is that in order to ground properly I need Wye on the 480 side. What are my options?
It is a common procedure and honestly if a person is working on this system and isnt qualified to recognize the hazards then they will eventually kill themselves off in some other way.Feyd said:It's a commercial building, a slate company. They are installing an industrial saw that has 2 460V motors. I'm not really comfortable with corner grounding, I've heard it creates issues and I'm afraid of someone coming behind me and getting hurt.
I agree with Pony. There's nothing really unusual or inherently dangerous about this install....I'm not really comfortable with corner grounding, I've heard it creates issues and I'm afraid of someone coming behind me and getting hurt.