Originally Posted by camprat
Jimh you are right to say in house main services panel the neutral & grounds are wire the same, But any panel past the service is a sub-panel. This have the the neutral and ground isolated . The ground goes to the metal case of the panel, no jumper to the neutral buss. The rig you plug in to that house is a sub panel. If you look in your trailer panel that is how it wired. this is why if you have a open neutral on your sub feed or panel you don't lose your ground & if you have a hot to ground the breaker will trip. Just a simple explanation .
revrnd if you have a factory wire rig & cord your ok. the problem lies in people miss wiring plug when there change out the plug or miss wire outlet. I have a volt meter that plug in to the 30/15amp x-over & check park voltage and then plug the meter inside the rig to keep a eye on things & this help out dry camping with generator .
the cob webs are starting to disappear...i remember abt the sub panel having to be connected to the main panel.
i remember the one thing the inspector didn't want to see was the earth ground going into the meter base. we had to run it up and conect it to the main panel. don't remember if that was to the housing or ground bus but suspect it was the housing...
i've been giving a lot of thought to putting a 220 dryer circuit in the trailer. so far what has stopped me is some of the campgrounds don't offer 50amp and i sometimes tie to two circuits and doubt that it is 220...two 30 may = 60 amps but not the same as 50 amp 220. if i ever decided to do something like this, i would do a lot of research first.