>>he hooked them up backwards because the UPS maker decided to use red for - and balck for +

Must have been a retired accountant <img src="images/graemlins/smile.gif" alt="" />

Back when I was a dumb private in the army, I hooked a generator up backwards for precisely that reason. It was obvious to me that everyone in the world used red for - and black for + ; why should a generator be any different? <img src="images/graemlins/blush.gif" alt="" />

I forgot I was dealing with engineers <img src="images/graemlins/wink.gif" alt="" />