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On Sun, 26 Oct 2003 17:22:32 -0500 (EST), (Ron
Thornton) wrote:

Rosalie,

You misunderstand a lot when it comes to the science you teach and it's
real world applications.

An explosion proof switch is simply a switch that is totally sealed from
the environment it is in. There are many ways to do this and certainly
a mercury switch is one of the most reliable in a low shock application.
Your explanation is simply not correct.

Regards, Ron

You may be right Ron. Then again, you may be wrong.
Ex-cathedra statements just don't cut it.

For example, Here's the Honeywell take on an "explosion-proof"
definition:

"Explosion-Proof Switch-a UL listed switch capable of withstanding an
internal explosion of a specified gas without ignition of surrounding
gases. "

This seems to agree with Rosalie's offering. So where are you coming
from, evidentially speaking?

Brian W