What size PFC should i use with my 15/30 NST?

["John Morawa" <morawaj-at-interaccess-dot-com> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)]

Hi again,

I do have another question.  I would like to put a PFC on my NST but don't
know what size cap to use.  It is a 15/30 stock NST.  I'm using a 13nf MMC
with a 120 bps SRGS (if that makes any differenc).  Any recomendations out
there?  If so, is there a formula or rule of thumb to use to determine what
size PFC to use?

Thanks in advance,
John M.