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For 15 years, we've had a
Progessive Industries EMS. Much better than just a surge protector. You don't have to spend thousands - just a few hundred. But it will save you thousands if you've hooked up to bad/incorrectly wired power or when you have spikes/drops.
All takes is one time without such protection to fry thousands of dollars in electronics on your coach. Ours has saved our coach on more than half a dozen situations.
Lori-