Important - check this every time you set up

As I understand it, my hardwired EMS will protect against a hot skin condition. As far as i know, I dont need to check for it, or worry about it (as long as the EMS is working) Or is that not true ?

Originally posted by babyboogerfamily Originally posted by mjlrpod As I understand it, my hardwired EMS will protect against a hot skin condition. As far as i know, I dont need to check for it, or worry about it (as long as the EMS is working) Or is that not true ? What is an EMS?

I'm going to do a two-fer and answer both questions at once. An EMS is a type of surge protector that including on-board testing for over and under voltages, as well as an open ground. EMS is short for Electrical Monitoring System and typically sold by two main companies, Progressive Industries and SurgeGuard. Expect to pay between $300 to $500 for a "smart" surge protector with EMS capabilities. And no, just because you have an EMS installed doesn't mean you can't have a hot-skin voltage. One of the most dangerous mis-wiring conditions I've discovered and named is an RPBG for Reverse Polarity Bootleg Ground, and there's no surge protector on the market, smart EMS or whatever" that can detect or disconnect your RV from an RPBG miswired outlet. Here's the article where I introduce the concept of an RPBG to the construction industry: http://www.ecmweb.com/contractor/failures-outlet-testing-exposed

Also, I'm going to be on the RV Show USA radio program this evening from 6:30 to 7:30PM Central Time, so call up and ask your question if you can. https://www.facebook.com/TheRVShowUSA/ Here's more info below:

Thank you for sharing such amazing tips. It's good to be a part of such helpful community.

I'm glad to see this thread is still making an impact.  I'll add that since I posted this, I've checked my hookup with an outlet tester and NCVT every time (I have a voltage display inside), and I've found multiple campgrounds with miswired power poles.

Your issue was an ungrounded power source. That can happen in a campground. One thing you can do is disconnect your power cord and measure from the ground on your 30 Amp connector to the trialer frame. It should be O ohms. That tells you your trailer ground at the trailer is a good connection. The top two connectors should be "open" and the bottom spade should be shorted to the frame. That would be good. Then you can suspect the power source is the issue. That is a plus of your power cord and not using extension cords and adapters. I use my protector as a circuit checker here at house. To make sure there is a ground from the power panel to the 30A RV connector I had installed. Good post.