Now here is a piece of equipment that no RV'er should be without. The Surge Guard power protection unit. This device will completely protect your RV from all sorts of power issues that you may find at a campsite while hooking up to their pedestal.  This device checks the power coming from the power source, and ensures that the power is clean, the right voltage and polarity. It also protects during surges or brownouts. In the event that the device detects any of the above issues the device will instantly disconnect your RV from the power source and will not reconnect until the issue has been solved. Power protection that offers peace of mind and is so easy to use that you forget it's even there protecting your RV. 

I have used this device for one season and already it has saved my RV from three power issues, one of them right in my own driveway. I highly recommend this piece of kit for the avid RV'er.  Unfortunately it is expensive as i imported it from the United States but I found that quality and peace of mind it afforded me far outweighed the cost.