Originally Posted by 10x
What is the difference in surge protectors, I have seen prices vary from 70 to 500 bucks? Realistically what do I need for my TT? I have never used one on my previous 2 other trailers. Do I need to spend big bucks on one?
There are protectors that will get rid of (most) "spikes" (such as those induced by lightening). You probably have your computer at home plugged into a cheap one of those. RV versions cost ~$100. They're really not sufficient for your needs.
Next you have Energy Management Systems. They will protect your RV from mis-wired pedestals and from over-voltage and under-voltage "surges" by refusing to turn on the power in your RV until the problem is rectified. They cost in the $250-$350 range (50-amp service more than 30).
But if you have low voltage (because a poorly-wired park can't support the air-conditioner load), the last thing you may want is for your EMS to keep the power turned off in your RV (even if it is protecting your AC from damage). A solution to that is a "voltage booster" which will raise the voltage to an acceptable level. You can buy them to install before your EMS system, or you can buy them which have both EMS and voltage-boost function in the same box. Now you're talking some serious bucks.
In my opinion, you need an EMS. Whether or not you need voltage-boost depends on when and where you camp.