- Apr 28, 2010
- Funster No
- Winnebago Sightseer
- 9yrs, but many years a tugger.
This truly is correct. My answer however was a comment on polarity effecting the way an AC motor runs. Some motors have two sets of windings to be able to run in both directions, a good example is a sewing machine. Having said that, I've seen a 3 phase motor start up in the opposite direction, on a Ward lathe, without any intervention, when it got its knickers in a twist, over which was the hot leg. It was many years ago when I was a mere apprentice. The foreman didn't half move fast to the switch board, before the chuck spun off.It doesn't matter insofar as power used. Appliances would work just fine.
The only difference is that the neutral is close to ground potential so there is no shock hazard from that wire, whereas the live wire is at a high potential and is a shock hazard.
So reverse polority is a problem that's needs addressing even if it does work since an S/P MCB would isolate the neutral and not the live