Open Neutral
Senior Member
- Location
- Inside the Beltway
- Occupation
- Engineer
We're getting 3ph open delta from PG&E. We alas have a 480v 3ph 2 hp. pump in place 750ft down.
So I'm looking at 240->460 transformers. But most I see are wye on the LV side, delta on the 480. As far as I can see, the motor [http://www.franklin-electric.com/re...ModelNumber=234 325 94--S#model234-325-94--S] is 3-wire, so feeding that sole load with a delta leaves everything floating.
What are my options? Obvious would be a non-stock 240 delta-> 460 wye transformer. Others that the electrician & inspector will like...?
[Don't even ask about swapping the pump motor. $2K+ in labor to pull; & ~that to install a 208/240 one..plus buying it.]
So I'm looking at 240->460 transformers. But most I see are wye on the LV side, delta on the 480. As far as I can see, the motor [http://www.franklin-electric.com/re...ModelNumber=234 325 94--S#model234-325-94--S] is 3-wire, so feeding that sole load with a delta leaves everything floating.
What are my options? Obvious would be a non-stock 240 delta-> 460 wye transformer. Others that the electrician & inspector will like...?
[Don't even ask about swapping the pump motor. $2K+ in labor to pull; & ~that to install a 208/240 one..plus buying it.]