Surge Protectors?

westom wrote:
Numerous and completely different anomalies exist. All are called surges. No protector protects from all anomalies. A discussion that does not define each anomaly separately is subjective; classic junk science reasoning.

Not all anomalies have anything to do with surges or spikes at all ... some are wiring errors, some are errors that occur because of deteriorating equipment, some are errors because source power coming into the park either fails or ranges out of spec. Of course no one single device will protect from everything, particularly nearby lighting strikes, but that nevertheless doesn't mean a device such as a TRC or Progressive Industries EMS isn't a valuable addition that can effectively protect from many line errors. As for defining "each anomaly separately" leave that to the techies, which very few campers are ... they just want to plug in with an EMS in the line with the confidence they've reasonably done what they can to protect their rig's electrical system, no other explanations needed. Diatribes like yours claiming "junk science" only confuse and turn others off from the important message - you're better off with an EMS than without.