Hello all,

I have a question that I ask from time to time and I seem to always get different results.

My question is this... (This is just a scenario/example)

I have a load of 360W and my input voltage can be 120-240.

At 120V, with a 360W load, my current is 3A.

At 240V, with a 360W load, my current is 1.5A.

Which is more efficient?

What i am usually told is 240V because you don't loss as much from heat as you would with 120V.

I was told this same answer from about 10+ people from just out of college to 30+ years of experience.

My other answer was how 240V works in standard U.S. homes and the way the sine waves never let go below zero. (I might of worded this wrong)

This was told to me by 2 people with over 40+ years experience.

My question is, to you all, what is your answer? I am still confused after thinking of this for over a year. Maybe you all can clear this up once and for all!