Original poster: Gerwazy WP <hardtmutha1-at-wp.pl> Hi, I`ve got 10kV NST, so on my mmc string it will be about 28kV and my mmc is made from 9 caps in series rated for DC 2000V and for AC 700V. Can I run them for about 20-30sec ? or it will blow up after 1sec ? ohh, and i`m using WIMA MKP 10, -2000, ~700 caps cheers, hardtmuth