- #1
girts
- 186
- 22
I was vacuuming my house, the vacuum cleaner is 1600w rated I remember, then i unplugged the cord from wall socket and I observed something interesting , and to be honest I remember I have seen this before with my washing machine and elsewhere, when I take out the plug from the wall socket I notice that one lead is noticeably warmer than the other, I tried this multiple times and everytime the result is the same, now I haven't yet measured but I assume the hotter one is the phase and the colder one is neutral.
Anyway maybe I have forgotten something but at least in DC current is the same in a given loop at every point of the loop and the current through the loop is given by voltage and load resistance (assuming power supply has enough power to hold certain voltage under certain load resistance)
Ok in an AC circuit this rule is the same right ? current is the same both in phase and in neutral? at least it should be right?
although I realize that since we are talking about an inductive load (motor) factors like impedance and reactive power come into play, but can anyone please explain why there is this difference in heat between the wires?
Anyway maybe I have forgotten something but at least in DC current is the same in a given loop at every point of the loop and the current through the loop is given by voltage and load resistance (assuming power supply has enough power to hold certain voltage under certain load resistance)
Ok in an AC circuit this rule is the same right ? current is the same both in phase and in neutral? at least it should be right?
although I realize that since we are talking about an inductive load (motor) factors like impedance and reactive power come into play, but can anyone please explain why there is this difference in heat between the wires?