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Transformer line/load amperage? Transformer line/load amperage?
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Old 04-04-2008, 05:33 PM   #1
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Transformer line/load amperage?
I am wanting to make 208/120 bang board. I am limited to a 225A 480V breaker. I am wanting to know what kind of a total load amperage I will be getting. Also how to come up with that answer. Basically if I feed a transformer with a 225A breaker, what kind of amperage will I get on the other side. Is it linear or do I lose/gain any.

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Old 04-04-2008, 07:08 PM   #2
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Right around/at 500 amps, assuming you're using a big enough transformer.

Is this for a theatrical application or are you on a construction project.
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Old 04-04-2008, 09:28 PM   #3
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If you use 1 inch fire rated (UL stamped) plywood for the bangboard the local inspector will allow an extra 50 amps regardless of wire size.
I've done temp boards with uni-strut, stands, and the like, just make sure the GFCI's have the check off calender so you don't fined from OSHA.

Looks like your good to go with the information provided! Good Luck
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