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Plug this Surge Guard into the campground pedestal before your shore power cord to catch electrical problems before they reach your RV. It's rated for 30-amp service and carries a 2,450-joule surge protection rating, with monitoring built in for the wiring faults that are common at older or poorly maintained pedestals.
It's a lightweight, portable option for anyone who wants pedestal-side protection without wiring a permanent surge guard into the RV.