120 volt electrical issue

noteven wrote:
Neither on board generator or a portable supplying power to the shore power connection have the same issue.

Indications are the polarity of the shore recepticle the trailer was connected to is reversed. Electrician being consulted.

Issue resolved - power supply recepticle the trailer was plugged in to had reversed polarity. Fixed.

Glad to hear it.. In reading the first I assumed you had that issue when using a Generator not shore power.

Generators ... At least portable ones, Not grounded so polarity not an issue,

But you do often have 60 volts showing on the ground wire. (no current but 60 volts. put a load on it and it hits zero and fast)

noteven wrote:
Issue resolved - power supply recepticle the trailer was plugged in to had reversed polarity. Fixed.

beemerphile1 wrote:
Learn from this, your life depends on it; never connect to any pedestal without first checking the polarity and voltage.

If the OP really wants to learn from this experience he'd invest ASAP in a Progressive Industries EMS w/Surge Protection, portable or hardwire, that will constantly monitor incoming source power, refuse to pass faulty power on to his trailer whenever any such error may occur, AND tell him the reason why it won't do so. :B

OR like many he could ignore this advice, potentially risk his life AND his trailer's electrical system, and hope he never runs into any situation ever again where the power source being supplied isn't what it should be ... yeah, what are the chances?! :R

noteven wrote:
Neither on board generator or a portable supplying power to the shore power connection have the same issue.

Indications are the polarity of the shore recepticle the trailer was connected to is reversed. Electrician being consulted.

Issue resolved - power supply recepticle the trailer was plugged in to had reversed polarity. Fixed.

Learn from this, your life depends on it; never connect to any pedestal without first checking the polarity and voltage.

Neither on board generator or a portable supplying power to the shore power connection have the same issue.

Indications are the polarity of the shore recepticle the trailer was connected to is reversed. Electrician being consulted.

Issue resolved - power supply recepticle the trailer was plugged in to had reversed polarity. Fixed.

Connect a 100 watt lamp between chassis and ground.

One hopes you will see no light, try a night light (7 watt kind) as well.

There are several conditoins, Now 120 volt is .. not common, but 60 is very common if you have an open ground, and with most generators you do, however the generator shoudl NOT be grounded so you should still have zero volts.

It appears the polarity is reversed at the supply I was connected to. Will report back after sunup and investigation.

bad dogbone

One thing for sure, your chassis is not properly connected to Earth Ground at source (via the pedestal).