Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <A123X-at-aol-dot-com> Some people like to use an extra MOT to ballast 2 MOT's that have their secondaries in series to keep the heat down etc. If inductive ballasts, like an MOT, don't drop the voltage why can't the two main MOT's just be ran with the primaries in series to ballast each other? Mark