[Amps] Conservation of Energy!

[Steve Thompson]

> On Sun, 06 Dec 2009 15:33:21 +0000, "K1TTT" <K1TTT at ARRL.NET> wrote:
> 
>>Well, actually you could make some argument that running on 120v instead of
>>240v increases the I^2R losses in both the transformer and power line to the
>>amp.  But I doubt that you would notice that in your electric bill without
>>careful testing.
> 
> REPLY:
> 
> Thanks for posting that, Dave, you beat me to it. 
> 
> Those guys on 40 meters are right. Other things being equal, for a given power
> output, running anything off 240 volts is more efficient than running it off
> 120, due to I-squared-R losses in the AC line. Whether or not that's what they
> had in mind is not known, but their conclusion was and is correct.
> 
> 73, Bill W6WRT

The original discussion revolved around 120V costing twice as 
much. That's a lot of I^2R!

Steve