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277/480 volt to 208 (energy consuption)

277/480 volt to 208 (energy consuption)

277/480 volt to 208 (energy consuption)

(OP)
Scenario 1) 208 volts with a load of 10 kw for 1 hr = at 15 cents a kwh=?

versus the same load via a 277/480 volt metered service
with a dry pack transformer.

scenario 2) 277/480 volt metered service stepped down to 208 volts with a load of 10 kw for 1 hr = at 15 cents a kwh=

would you consume as much energy in scenario 2 when being metered at 277/480 volts?

I think the power cost would be cheaper under scenario 2

 

RE: 277/480 volt to 208 (energy consuption)

Hi Amped,

Assuming you've designed both the transformer feeder and load feeder for the same voltage drop in each of the two scenarios, your scenario 2 will include transformer inefficiency losses on your side of the meter that scenario 1 will not include.  You'll pay a little more to heat the space around your dry-type transformer.

Good on ya,

Goober Dave

RE: 277/480 volt to 208 (energy consuption)

Yup, if you add a transformer you add losses to the system which would use more energy all else being equal.

Using a higher voltage at a lower current doesn't mean less energy.
 

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