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post #11 of 36
Quote:
Originally Posted by Tator Tot View Post
If you want 240v AC voltage you'll need to either get a terminal installed into your house. Or get a Variac Transformer.

The efficiency gains on 240v is small so you shouldn't worry about it.
If his house is a standard 3 wire residential electric he has 240v already. I'm not sure how it works in Canada but all houses here ( USA ) have 240v.
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post #12 of 36
Thread Starter 
Quote:
Originally Posted by BigFrank View Post
If his house is a standard 3 wire residential electric he has 240v already. I'm not sure how it works in Canada but all houses here ( USA ) have 240v.

My base board heaters have 240V going into them. last year I got geothermal heating uints and no longer use the 240v (capped in the walls) but I'm not sure how the plugs work and how or what outlet I'd have to wire.
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post #13 of 36
Quote:
Originally Posted by BigFrank View Post
If his house is a standard 3 wire residential electric he has 240v already. I'm not sure how it works in Canada but all houses here ( USA ) have 240v.
You still need to have a terminal installed for 240v outlets.

Or use a Variac Transformer to turn a normal 115v outlet into a 220v outlet.
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post #14 of 36
In order to get a PSU to use 240V by using two plugs you would need two separate 120V circuits from different phases.

The proper way would be to install a 240V circuit with the appropriate receptacle and cord connector.
Edited by Arctucas - 2/2/11 at 2:28pm
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post #15 of 36
Quote:
Originally Posted by kiwwanna View Post
Then why do some server PSU's use multipule plugs to attain 240v from 120v outlets?
(and im not talking about the redundancy plugs/unit)


Efficiency is small but doesnt 240v use half the amps from the wall the 120v does? So with 2-3 PSU's yould be using half the amps?
Increase of the voltage will reduce amperage as long as the resistance stays the same.
A basic outlet does not contain 240v. You have to have an outlet specifically wired to have 240v potential.
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post #16 of 36
Quote:
Originally Posted by Tator Tot View Post
You still need to have a terminal installed for 240v outlets.

Or use a Variac Transformer to turn a normal 115v outlet into a 220v outlet.
Much cheaper to buy a receptacle designed for 240v. But in this case, unless the PSU is designed to get 240v it's all pointless to be honest.
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post #17 of 36
Half the amperes, but twice the voltage equals the same amount of power, as the utility company charges by KiloWatt-Hour.
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post #18 of 36
Quote:
Originally Posted by kiwwanna View Post
My base board heaters have 240V going into them. last year I got geothermal heating uints and no longer use the 240v (capped in the walls) but I'm not sure how the plugs work and how or what outlet I'd have to wire.
Here is the difference.



It could be done, but unless you have a backround in the electrical field. I would avoid doing it yourself. If the wire is already there, and at the panel it should be rather cheap to have a licensed electrician come out and install a plug for you.
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post #19 of 36
Thread Starter 
Quote:
Originally Posted by BigFrank View Post
Much cheaper to buy a receptacle designed for 240v. But in this case, unless the PSU is designed to get 240v it's all pointless to be honest.
Are not all if not most all PSU's switchable to 120 - 240v, either from back switch or auto voltage sensor?
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post #20 of 36
Thread Starter 
Quote:
Originally Posted by Arctucas View Post
Half the amperes, but twice the voltage equals the same amount of power, as the utility company charges by KiloWatt-Hour.
but half the amperage is half the amperage on loads on my elecrtical panel, namely my breakers. I've had them poppin and its annoying. I have a 200 AMP box but sometime its not enough. Especially in the winter when my Thermal heaters are rated combined @ 12Kwatts. When they charge my PC's pop more often.
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