I was perusing power toroids in the Mouser Catalog. Interesting find. A 2.5kVA toroid costs almost $400 and weighs over 40 pounds. That's of course problems with big amps-- weight. 73 de Brian/K3KO ----- No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2178 / Virus Database: 2425/5042 - Release Date: 06/03/12