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Old 09-03-2020, 08:16 PM   #71
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Ground fault

What happens if you use a 3 prong extension cord plugged in to a 3 prong to 2 prong adapter, skipping the ground?

I had a similar problem in a 2001 Diplomat. Turns out the fridge icemaker was the problem. Try unplugging the ice maker.
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Old 09-03-2020, 08:24 PM   #72
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Originally Posted by Daveyjo439 View Post
What happens if you use a 3 prong extension cord plugged in to a 3 prong to 2 prong adapter, skipping the ground?

I had a similar problem in a 2001 Diplomat. Turns out the fridge icemaker was the problem. Try unplugging the ice maker.
Well, you open up yourself and anyone else who enters your coach the possibility of death by electrocution.
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Old 09-03-2020, 08:49 PM   #73
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Originally Posted by Daveyjo439 View Post
What happens if you use a 3 prong extension cord plugged in to a 3 prong to 2 prong adapter, skipping the ground?

I had a similar problem in a 2001 Diplomat. Turns out the fridge icemaker was the problem. Try unplugging the ice maker.
If you're asking about the GFCI, it does not use a ground connection to do it's magic.

GFCI's sense for *equal current* on the Line and Neutral conductors of the circuit. A difference of 5ma or greater will trip the GFCI. No ground connection required.

The term "ground fault" is a bit deceptive, but it refers to current finding an alternate path to ground, outside of the circuit. This is what GFCIs look for.
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Old 09-03-2020, 09:47 PM   #74
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If you're asking about the GFCI, it does not use a ground connection to do it's magic.

GFCI's sense for *equal current* on the Line and Neutral conductors of the circuit. A difference of 5ma or greater will trip the GFCI. No ground connection required.

The term "ground fault" is a bit deceptive, but it refers to current finding an alternate path to ground, outside of the circuit. This is what GFCIs look for.
GFCIs not needing ground connections to work is correct, BUT some folks do cut the ground pin off, to force the leaking current to return thru the neutral.

If the ground was there, that's where the leaking current would go. With it cut off, and the RV on tires, there is no path to ground, so no GFCI trip.

It will still save your life though, when your body become the ground.
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Old 09-03-2020, 09:54 PM   #75
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GFCIs not needing ground connections to work is correct, BUT some folks do cut the ground pin off, to force the leaking current to return thru the neutral.

If the ground was there, that's where the leaking current would go. With it cut off, and the RV on tires, there is no path to ground, so no GFCI trip.

It will still save your life though, when your body become the ground.
What if the jacks are down?
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Old 09-03-2020, 11:11 PM   #76
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There is a lot of speculation going on, it would be nice to get an update from Ernie, the OP.
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Old 09-04-2020, 05:56 AM   #77
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I have a similar problem with my 2012 Monaco Diplomat. I had it plugged into a 50 amp to 30 amp adapter, then a 30 amp to 20 amp adapter, then an extension cord to a GFCI outlet in my garage. Worked fine for the longest time, then it started tripping the GFCI outlet. I couldnít find a problem, so I plugged it into a non GFCI outlet and everything has been fine since then. Never had a problem at a campground, though.

Weíre having some work done at the house this week, so I moved the coach to my neighborís driveway. Hooked it up to their attached garage with GFCI outlet and it tripped. I then connected it to their newer, detached garage GFCI outlet and itís working fine.

I am at a loss trying to figure this out. I did notice a little oxidation on the male end of my 50 amp cord from the coach. I will clean that and see if the problem continues. I normally keep the coach plugged in just to keep the inverter and batteries charged.
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Old 09-04-2020, 06:28 AM   #78
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What if the jacks are down?
The jacks are insulated between the piston and cylinder, thru the seals. There is no metal to metal contact in the moving parts, that would score the piston.

BUT if you have the type with springs, then they create a path to ground, so it depends on the ground they sit on, wheather enough current will flow thru the earth to the power source ground.
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Old 09-04-2020, 07:42 AM   #79
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GFICB

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Big difference. GFCI outlets trip from current leakage to ground, the type that kill you, so they are very sensitive.
If the GFI is at the power panel, and you are connecting the RV with an extension cord, GFI can trip if the cord is over 125' oneway
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Old 09-04-2020, 07:47 AM   #80
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GFCI

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Originally Posted by Dandick View Post
I have a similar problem with my 2012 Monaco Diplomat. I had it plugged into a 50 amp to 30 amp adapter, then a 30 amp to 20 amp adapter, then an extension cord to a GFCI outlet in my garage. Worked fine for the longest time, then it started tripping the GFCI outlet. I couldnít find a problem, so I plugged it into a non GFCI outlet and everything has been fine since then. Never had a problem at a campground, though.

Weíre having some work done at the house this week, so I moved the coach to my neighborís driveway. Hooked it up to their attached garage with GFCI outlet and it tripped. I then connected it to their newer, detached garage GFCI outlet and itís working fine.

I am at a loss trying to figure this out. I did notice a little oxidation on the male end of my 50 amp cord from the coach. I will clean that and see if the problem continues. I normally keep the coach plugged in just to keep the inverter and batteries charged.
A lot of duplex receptacles have been back wired at the installation of electrical system as opposed to using the screw terminals. A little corrosion with the spring connection using the back wiring method can lay havoc with GFCI.
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Old 09-04-2020, 08:42 AM   #81
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The jacks are insulated between the piston and cylinder, thru the seals. There is no metal to metal contact in the moving parts, that would score the piston.

BUT if you have the type with springs, then they create a path to ground, so it depends on the ground they sit on, wheather enough current will flow thru the earth to the power source ground.
I have hydraulic jacks with spring return. Some RVís have electric jacks or hand crank jacks. Not all RVís are insulated from ground by their tires when parked and plugged in, so, performing a ground lift may not necessarily prevent a GFI from tripping.
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Old 09-04-2020, 09:18 AM   #82
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A lot of duplex receptacles have been back wired at the installation of electrical system as opposed to using the screw terminals. A little corrosion with the spring connection using the back wiring method can lay havoc with GFCI.
I don't see a lose connection causing a GFCI to trip. There has to be a alternate route for the current to flow.

A bad connection causes resistance and heat but it's no different then plugging a heater in.
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Old 09-04-2020, 09:23 AM   #83
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I have hydraulic jacks with spring return. Some RVís have electric jacks or hand crank jacks. Not all RVís are insulated from ground by their tires when parked and plugged in, so, performing a ground lift may not necessarily prevent a GFI from tripping.
In that case, you will need to find the ground fault. It shouldn't be there.
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Old 09-04-2020, 09:33 AM   #84
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In that case, you will need to find the ground fault. It shouldn't be there.
I donít have a ground fault issue with my coach.
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