There are motor start caps and motor run caps. The
former have much
higher capacitance and are only connected for a few seconds during
motor start. So my understanding is that start caps are often
electrolytic because you can get away with it, while run caps are not
because they are subjected to AC full time.
Very true, but either case is pretty hostile, electrically (especially on
larger motors).
William Donzelli
aw288 at
osfn.org