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Old 09-06-2014, 06:27 PM   #15
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You are not fixed yet...

What you describe should have made sparks and tripped a breaker.

It may have been almost touching and just leaking.

Just make sure with voltage measurements that everthing is as it should be

Tony & Lori
1989 Country Coach Savannah SE
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Old 09-06-2014, 11:29 PM   #16
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Originally Posted by wa8yxm View Post
You might not have a short at all.. But rather an open...

Questions time:

Were you plugged into shore power?
(Yes read on, NO sorry I can not help you stop here)

Did you check the ground on the shore outlet
YES: was it good: NO do so now, use a 3-light tester and/or a volt meter

Also using a multi-meter check for continuity between the round or roundish pin on your shore cord (The one you plugged into the park box if you use an adapter) and the chassis of the motor home.. You should see ZERO ohms. NOTE you will have to unplug to do this test.

Finally: What I think happened.

As I said, I think you have an open ground You have many yards of ROMEX and other cables in that motor home

Romex is (usually) 3 wires, a neutral, a ground and a hot layed side by side with the neutral in the middle, They are separated by insulation.

In electronics we study a device called a capacitor and how it works

The symbol for a capacitor looks like this -||-

Now if you want to make an AC voltage divider you can make one like this


Put 120 volts on one end, Ground the other and the * will be 60 volts

And that is exactly what Romex cable is electronically.

So the ground wire (Safety ground) is brought to 60 volts by capacitive voltage division from the other two wires. 100% normal. This is why it is tied to ground,, To protect you. from this, and a few other things which unlike this are faults.
Almost guaranteed this is your problem. He is right on the money.

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