I thought the same also. Never had one on the two pups we owned nor our 2010 HTT. Reading these forums, and knowing I somteimes camp in questionable areas, I installed the hw30 on our new 2015. Pretty simple to install and I mounted to the back of the converter/power center. Being a geek, it is cool to look at the display and know what you're drawing for current when you fire up those juice sucking devices. Well, one of those sketchy campgrounds is at the end of the earth (or entrance into the New World. Provincetown, MA). We were on a loop with mostly smaller campers. Just two tt's with a/c besides us. We could never run the A/C. The voltage would drop down to 100 volts and the hw30c would cut the power (exactly what it was designed for). Fortunatley the days weren't that bad that A/C would have een really needed. But, by the end of the trip, two big rigs pulled in. One class A and a fifth, both with multiple a/c's. When they plugged in my line voltage(with no draw from me) was at 104 volts. I couldn't even turn on the tv without the hw30c cutting power. I called the cg manager who sent someone over. He checked at the post and was only getting 104volts. After a few attempts at fixing the post, we wnded up running a 30amp extesion cord accross the sites to a different post. PS the couple in the camper next to us fried their microwave last year at this same campground.
2008 Dodge Durango
2015 Roo 23 ikss