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Originally Posted by tmclaren
Thank for all of the responses. We know we are going to buy one. We just have to decide which model. I have a brochure from the dealership explaining them, but still not sure which way to go. What is the difference between the $100 and the $300 models?
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$100 model is most likely a surge protector. The others protect against surges but also low voltage or high voltage. Low voltage is probably the situation you find more often than high voltage. On those hot summer days when everyone comes back at 5 from being out all day and kick the AC on you can easily get a voltage drop. Especially in older campgrounds. This will shut the power off until the voltage returns to a safe number. Lightening is typically the source of surges.
You can't wrong with the Electrical Management System EMS progressive industries... They also analyze the electric system in the campground to make sure they are wired properly. Well worth the $$