Ed Price wrote:
Also depends on how big a fan you have blowing on the Variac.
Maybe - but generally - how variacs react to overload depends on what
kind of shape the brush assembly is in--- if its pitted and nasty -
(usually because the spring has gotten weak) it's going to generate
excessive heat even before it reaches rated current- and once across
that- then even a fan won't help. Variacs (variable autotransformers)
need care and maintenance like all equipment - and since they're so
simple - often taken for granted and ignored - until they protest by
letting their smoke out...
best regards...
--
randy guttery
A Tender Tale - a page dedicated to those Ships and Crews
so vital to the United States Silent Service:
http://tendertale.com