277/480 volt to 208 (energy consuption) 1

[Amped1]

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

 

[DRWeig]

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

 

[LionelHutz]

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.