I replaced my two start caps on my irrigation well with ones of a lower voltage rating (220V 300 MFD) and have water flowing... No smoke so far, but I know it won't last.
I'm looking for 330 volt rating 270 - 320 MFD start caps. Grainger,McMaster, Newark, and Digikey don't go this large. Any other suggestions for a vendor?
I will clobber a bunch of smaller 330 volt rated caps for temporary if/when the 220 volt ones blow, but they wouldn't fit inside the control box.