Well it's been a while, I just remembered something else about run and start. We used to have to put "motor run" capacitors on all our large equipment (3 phase) to get our power factor closer to one (unity). It wasn't ever used in that situation for creating a second phase, as we were using 3 phase motors. However, this system is a single phase system. I don't think the same issue is being addressed by the run capacitor. joe heck btw, I checked for "motor start" capacitor on google and got a nice place to buy caps. http://www.toad.net/~jsmeenen/boom.html is a nice picture of both types of caps in a pool motor application End of returned message