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Joined: Dec 2001
Posts: 444
S
Sandro Offline OP
Member
Let's say we have two identical buildings. Both buildings have identical loads (lighting, power, small motors, pumps). One has 575V 3ph service (w/step down for lights and power) and the other building has 208V 3ph service. Would the hydro bill be significantly different on these two buildings if at all?

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Joined: Oct 2004
Posts: 135
B
Member
Well, I would say no. Power is watts and watts is power no matter voltage or amps. If there was a difference I think it would be marginal and due to other influences not disclosed in your question.

Joined: Jan 2003
Posts: 174
B
Member
I agree with Bob, the cost would be the same. Should be no difference in the KWH each month.

Joined: Dec 2002
Posts: 228
J
Member
Wouldn't your kwh useage be higher for the 575 due to losses in the xfrm with heat production?

Joined: Oct 2004
Posts: 135
B
Member
Well, like I said, there may marginal differences if taking every variable into account. I believe it's watts that determines BTU, not just volts.

Joined: May 2001
Posts: 378
F
Member
The only savings difference is in building construction matrial with 208 to 575 it can be large.I forget how it was explained but you basicaly save on copper.

Joined: Jul 2004
Posts: 625
S
Member
You would have transformer losses at 575 that you don't have at 208. On the other hand, I have heard that some electric companies adjust the rate to account for transformer losses if you take a higher-voltage feed.

On the other, other hand (I have lots of hands), the I^2R losses for distribution will be lower at 575.

However, in the final analysis, the choice of voltage isn't going to have any effect at all on your water bill. [Linked Image]

[This message has been edited by SolarPowered (edited 04-06-2005).]


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