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Default Equipment Protection from 240VAC

w_tom:
Wow.... we are all so impressed with your "engineering" knowledge....
and you are arrogant and pompous too.

Brad:
Most consumer grade surge protectors have MOVs in them that clamp at
140 to 160 Volts. The better ones have 3 MOVs that protect Hot to
Ground, Hot to Neutral, and Neutral to Ground. The really good ones
have MOVs that have high enough ratings and are fused in such a way
that they really do protect the equipment from most surge modes.
If foolproof protection is required then maybe you should use a
properly rated UPS.
electricitym
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