|SurgeX Power Pro|
At a minimum, make sure that any point of use surge suppressor is UL 1449 listed/recognized at a suppressed voltage rating (SVR) of at least 330 volts. For endurance, the surge suppressor should also be Classified in Accordance with ANSI/IEEE C62.41-1991, Recommended Practices. (UL 1449 listed products are not necessarily classified for endurance.)
Good commercial grade surge suppressors include:
SurgeX Power Pro, available through Home Depot for $99 (as of this writing).
Tripp Lite Isobar, some of the best standard grade suppressors, are available through Amazon.
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