Original poster: "by way of Terry Fritz <twftesla-at-uswest-dot-net>" <Kidd6488-at-aol-dot-com> Hi all, Ok, I know that for examle, A 2000VDC cap can't take 2000VAC (can it?), the VAC rating is lower. Is there any formula or guessing you can do to find the VAC rating on a DC cap? Jonathon Reinhart