[email protected] writes:

>The vendor
 
>who designed and built the power supply for us put thick-wall heat-shrink
>tubing
 
>over the MOV to provide a safety barrier, since the dipped epoxy coating
>was
 
>considered to be only operational insulation.
>
This reminds me of a product we made about 10 years ago. We put MOV's on a
terminal block in the primary circuit to solve a problem. Had no trouble
with that but I recall one of the agencies (UL, CSA, TUV) made us put
heatshrink over the body of each MOV. Now I find out why.

Regards,
Scott
[email protected]


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