xfmr question

[nizak]

Would the output amperage of a 45KVA xfmr wired at 480V primary be 216A with a 208/120 secondary?

 

[ron]

It is if it is a single phase transformer.

 

[bob]

That would be correct for a single phase transformer. For a 3 phase trannsformer it would be 125 amps.

 

[raider1]

I am assuming that by 208/120 volt secondary that you have a 3 phase transformer.

The amperage on the secondary of a 3 phase 208/120 volt 45 KVA transformer is 125 amps. (45,000/208 x 1.73)

Chris

 

[nizak]

yes it's 3phase, and 125 is what I come up with. My bad!

 

[zog]

Would the output amperage of a 45KVA xfmr wired at 480V primary be 216A with a 208/120 secondary?

Zero amps, until you add loads.

 

[raider1]

Zero amps, until you add loads.

Good point.

Chris

 

[LarryFine]

Zero amps, until you add loads.

Okay, let's not confuse the discussion with facts.