On Sun, 26 Feb 2012 16:56:31 -0800, Dmitriy Kiryashov wrote: :: I would think you might look for decent :: isolation transformer of appropriate power rating That would be expensive considering we are talking about a minimum of 6kW=20 of power. The RCD would hopefully cut in promptly. Colin -- cdb, colin@btech-online.co.uk on 27/02/2012 =20 Web presence: www.btech-online.co.uk =20 =20 Hosted by: www.justhost.com.au =20 =20 This email is to be considered private if addressed to a named individual= =20 or Personnel Department, and public if addressed to a blog, forum or news= =20 article. =20 =20 =20 --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .