"JohnM" wrote in message
...
jk wrote:
Gunner wrote:



True..but how often have you seen 220 do that with a carbon track on a
plug?

Gunner



Just as often as I have seen it happen on 480.

jk

I've seen it plenty of times on 480, can't remember ever seeing it on 240.

John

That makes sense to me. It's absurd to assume that the voltage makes no
difference. Given a high enough voltage, an arc can generate when there
are no proper conductors in the path. After all, aren't most insulators,
for the most part, simply not good conductors? With enough pressure
(voltage) anything will conduct------even glass. That being the case, it
stands to reason that as the voltage is lowered, so is the propensity for
arcing.

Harold