
This SPD, Surge Protection Device, has the right characteristics to mitigate normal surges that occur at the entrance to the mains. You can pay more for lower rated devices on the market, or you can pay a lot more for slightly higher rated SPDs. but if the surge can be suppressed then it will do all that is to be expected - no SPDs will prevent a direct lightning strike! SPDs are now recommended by the National Electrical Code for protecting service entrances. So it is advisable to follow this example and install it in your home or office. This Intermatic SPD will fulfill the recipe: I have at the entrance to the service.

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