Back feeding a 480 v / 208v 3 phase step down transformer what about the neutral

Thread Starter

MGMimsimssr

Joined Aug 4, 2016
3
When back feeding a Step Down Transformer to achieve a higher voltage how should the neutral and grounding and bonding be addressed since the neutrals ls on the secondary side originally but now will be on the primary side
 

Thread Starter

MGMimsimssr

Joined Aug 4, 2016
3
I was referring to the standard 480-volt Delta to 120 208 y Dry type Transformers normally used in commercial facilities to step down power
After reading the information you suggested I do understand we need a 480-volt Wye 120 208 y or Delta so that when we feed the Transformer with the 208v 3p power we will have a 480v neutral on the secondary side to refeed the existing 480-volt electrical panel.
Thanks
 
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