Well, reading this Forum can be expensive! I have been using a Surge Guard without any issues, but this past weekend while at an RV Park they were doing "maintenance" and the power went on/off numerous times. I got nervous and just unplugged from the pedestal until they were finished. That incident, and the comments in this Thread, prompted me to buy an EMS-PT50X from Progressive Ind. My only concern is having it shut down with my animals inside while we are gone, but then at least the AC won't get fried and will restart with normal power. I like the fact that if I have to use a 30Amp pedestal I can see the current being drawn before I exceed 30 Amps and pop the breaker. Anyone want to buy slightly used Surge Guard in good cond.....
By the way the EMS is On Sale at camping world for $366.15
http://www.campingworld.com/shopping/item/ems-pt50x-50-amp-ems-with-surge-protection/102485