Surge Protectors

[Too Many Toys]

I've been looking into installing a surge protector for the travel trailer. With all the thunder storms and lightening that we have been hit with over the years, and have not lost an appliance yet, it would be cheap insurance.
Do any of you guys use them? This is the one that I'm considering.

 

[campingnut]

That is the one that I have in my trailer and I had the 30amp preciously and never had a problem with either. Also they they do work.