"Aaron Fude" wrote in message
ups.com...
Hi,

I'm a little confused about the whole 120V vs 240V things. More
specifically, I'm now deciding whether to put in 120V or 240V mats to
heat the tile in my bathroom. My electrician told me to "of course,
put in 240V" because you then need a smaller current for the same
amount of energy. Yeah - I understand that from my physics class - but
so what? Is it safer? Is it more efficient? Does it work faster?

Further, I called the floor heat company and they told me that 120V is
for up to 150 sq ft and 240V is for 150 sq ft to 300 sq ft. So I don't
know which one to go with anymore.

As you double the volts, you half the amps. That means you can run smaller,
less expensive, easier to work with wires. Operating cost will be the same.

The 150+ is 240V for the reasons described. You don't want to have to run
#8 wires for the lower voltage units.