Original poster: otmaskin5@xxxxxxx I'd appreciate some advice on this. Once an NST has been unpotted, does it need to be repotted to safely run it? Or can it be run dry without being immersed in any potting material - i.e., just the bare core &coils? Thanks. Dennis Hopkinton, MA
Dennis, I run mine dry and have had no problems. But I replace the mica core-to-secondary insulation layers with polyethylene sheets. Some sort of insulation is necessary at those locations. Some folks repot them in a mixture of vaselene and mineral oil. <http://hometown.aol.com/futuret.page3.html>http://hometown.aol.com/futuret.page3.htmlJohn