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RV electrical accesory question

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This is probably a very stupid question, but I dont know anything at all about class A rvs. And Im not even sure if I have the right information (probably dont)

My wife's friend told her that she somehow melted some wires and connector having something to do with the generator in her class A RV. She said it had something to do with not turning off some kind of shut off switch when she parked it for a couple of months.

That doesnt make any sense to me. It seems that even if some master switch is turned on, there would still be no current flow. Certainly not enough to melt things. The only thing that would remotely make sense to me is if the RV was plugged in to shore power charging the battery, and someone decided to run the generator at the same time doubleing the current. But even then, I cant believe that a 2002 RV wouldn't have some kind of fail safe mechanism that would prevent the current from doubling on the charging circuit.

Anyone have any ideas what kind of damage just leaving a master switch on would do (other than draining batteries), or would cause wires and connectors to melt on a generator circuit ?
 
Sound like my brother who thought the big RV plug was 240V like his welder...

Running the generator with shore power would be bad so I assume there is a safety interlock of some kind.
 
I figured it out. :D It took a lot of translation and trying to figure out "woman" and "ding bat" talk. But I think "melted wires and connectors" were actually green and corroded wires and connectors. She finally told my wife that they had to replace the batteries and some wires. I think these were probably the original batteries. And with the "storage" switch not turned off, the batteries were dead in less than a week and the wires/connectors have probably been corroded for quite some time.
 
Running the generator with shore power would be bad so I assume there is a safety interlock of some kind.

Most RVs with an onboard generator are equipped with an automatic transfer switch which prevents the RV electrical system from being on both shore power and generator power at the same time.

Bill
 
Most RVs with an onboard generator are equipped with an automatic transfer switch which prevents the RV electrical system from being on both shore power and generator power at the same time.

Bill
The other way I've seen is that the generator is fed to a female plug in the electric cord storage compartment. When you want to use the generator you plug the power cord into this plug. When using shore power, you unplug and plug the cord into the shore power box. Very simple and no way to have both generator and shore power feeding the rig at the same time.
 
I figured it out. :D It took a lot of translation and trying to figure out "woman" and "ding bat" talk. But I think "melted wires and connectors" were actually green and corroded wires and connectors. She finally told my wife that they had to replace the batteries and some wires. I think these were probably the original batteries. And with the "storage" switch not turned off, the batteries were dead in less than a week and the wires/connectors have probably been corroded for quite some time.

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The other way I've seen is that the generator is fed to a female plug in the electric cord storage compartment. When you want to use the generator you plug the power cord into this plug. When using shore power, you unplug and plug the cord into the shore power box. Very simple and no way to have both generator and shore power feeding the rig at the same time.

My formerly owned '94 Lance truck camper and a '93 Hitchhiker fifth wheel with on board generators were wired in this manner. All of my later RVs with on board generators were wired with an automatic transfer switch. Either way, shore power and generator power cannot be on at the same time.

Bill
 
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