Why doesn't wattage equal amperage times voltage?
June 10, 2008 8:49 PM Subscribe
Another air conditioning question for the summer! 4.8 A *110V=515W?
posted by phoenixy to Technology (12 answers total)
I was reading the label on my air conditioner and noticed that it claims to use 115 V, 515 W, 4.8 A. Obviously the math I was taught in high school physics doesn't quite work out there. Why not? I'm guessing that there's some kind of safety margin built in here somewhere, but if so, where, and is it realistic?