Bob,
It's pretty well understood that service entrance boxes arc over at
about 7 kV or so... but I never took that to be a spec for the boxes...
nor have I ever heard of an arc over-spec for any other mains components...
the limit of performance will be determined by Paschen's curve - arc-over
voltage in air vs spacing... surface leakage current (to arcing
destruction) would be different for each material and is a function of much
more than just the voltage...
:>) br, Pete Perkins
- - - - -
Peter E Perkins
Principal Product Safety Consultant
Tigard, ORe 97281-3427
+1/503/452-1201 phone/fax
[email protected] email
visit our website:
http://ourworld.compuserve.com/homepages/peperkins
- - - - -
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