This is Joshua Peterson with Peterson Electric. We are here today in Windsor, Colorado. We had a customers who asked us to wire up his RV outlet, a plug for it. It is a 36 foot fifth wheel trailer. It is a 50 amp service on it. It does have 2 air conditionings. It is a fairly big unit. He asked us to wire it up & we basically piped from this panel by the back of my head where my finger is at, all the way around about 80 foot of conduit & we came all the way down here, then fed it through a LB here & went through the garage wall. You can see the outlet right here & in that outlet is a 50 amp, 4 prong outlet, & we put a 110 below it & put in our in-use covers as well. This cord is a 50 amp, 4 prong, 4 wire & the other end of it looks like what we would hook up on a “turtle” on a job site. What they wanted us to do was this 3 prong cord, it actually has 4 prongs, as you can see, & then adapts down to three. This is a 110 plug, but if you take off this other end, it shows it as a 3 prong plug. If you can see this during the sunlight, there has been some heat displacement. What they did is this plug is actually 277 volt rated for a commercial application, but this side right here, they parallel spliced that hot connector & this is its neutral on the other side & the ground at the top. Down here at the 4 prong, what you end up having is both sides right & left end up being the same phase. I think the reason why this is starting to distort it, it is to small size of gauge & you are going to need 240 to charge this kind of trailer. We wired up as such, what the manufactures said don’t use a jumper or a cheater cord. This is what I would call a cheater cord when you have 3 go to a 4, you are cheating the phases on that. I wouldn’t do that. I wouldn’t advise that. I definitely think that might cause you some issues for you. Make sure your polarity is lined up straight when you do this. We ran a three quarters conduit, ran our #6 gauge for out RV, took in our #10 for our ground, then ran our #12s for our 20 amp dedicated outlet. It comes out really clean by the time it is all said & down. What you need up seeing is an application like this on the outside of the house. Thanks for joining us! We will talk to you next week.
