You may at some time experience an electrical shock when entering or exiting your RV.
This is often caused by the wiring in the electrical receptacle that your RV is plugged into or
an improperly wired extension cord. If the "hot" and "neutral" wires are reversed, your coach and you may become
an electrical circuit with unpleasant or dangerous results.
There is a small
polarity tester available that will eliminate the guesswork and the hazards before
you plug in your electrical cord. Everyone should have one of these as standard
A user writes ...
I've just noticed something on my new-to-me '88 Lance camper:
When plugged in to shore power, if I touch something metal on the camper while
being grounded outside the camper, I get shocked (feels like holding a hot 110v
wire and ground, only a little less of a shock). Everything electrical that I've
tried works on the camper. I'm no electrical wizard, but do own a multi-meter,
anybody have advice where to start looking for the leak?
You are getting a shock from the campers metal skin due to incorrect wiring in
some part of the system. You can purchase a 110 volt polarity tester for under ten
dollars at a hardware store or electrical supply store. The device plugs into an
electrical outlet and has three lights on it to tell you if there is a problem and
where the problem is. Everyone should have one of these to test every campground
shore power outlet BEFORE hooking up the coach to the power source.
Does this happen every time? Have you plugged in using an extension cord that
may be wired wrong?
Or changed any receptacles or added anything that is screwed into the walls or
Also, sometimes a staple or screw works it's way into a wire through road
vibrations and shorts the wires to ground. This is a dangerous situation and must
be corrected before any further use of the camper.
Reader follow-up ...
Thanks so much for the info and the warning (we just unwittingly used the camper
this weekend!). I will disconnect the battery when I get home and pick up a tester
on the way home to start checking with. The only thing electrical-wise I had done
to this point was to put a new deep cycle battery in. I did try switching outlets
and going with/without an extension cord. It sounds like I should start with the
source circuit (as in maybe there's power in the ground wire already...)? Thanks
Follow up to my post last night: There's nothing wrong with the Lance; I picked
up a $7 tester at Home Depot and plugged it into my garage outlet and found that
the outlet has the hot and common wire swapped. Once I found a good outlet and
plugged the Lance into it, the shocking was gone.
So now I'm wondering what other house problems I can get solved here...! Thanks
again for the help...
Glad to hear you found the problem.
Take that polarity tester with you and test every campsite hookup. You never know who
changed the last receptacle and if they did it right!
Three-Wire Circuit Analyzer
This device simply plugs in to any outlet. It is recommended that you plug it in
to the power supply *before* plugging in your RV. Since the park supply may be the
30 amp plug, just plug in your 15 to 30 amp adapter, and then plug the circuit
tester into the adapter.
Three-Wire Circuit Analyzer warns you of faulty wiring in three-wire 110V