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TOMMY47's avatar
TOMMY47
Explorer
Jun 12, 2014

ELECTRICAL MYSTERY

Plugged my 30 amp into home line with an adapter.
GFI on home line tripped numerous time.
When it didn't, the Progressive Industries EMS-HW30C surge protector was flashing the error message E2--OPEN GROUND (no ground wire connection). Now, when I plugged it in, everything is working.
Checked all the ground wires and they seemed OK.
Everything worked just fine last year under identical circumstances.
ANY IDEAS?
I'm going to call Progressive for their input also.

10 Replies

  • Doubling up on GFCI outlets (or protected circuits) can cause fighting, tripping and trouble between them. Only have one GFCI in the system.
  • Why not use GFI for a motorhome? Isn't all the current supposed to go back through the cord? I don't understand what other route it could use.

    In my mind the GFCI has almost rendered the third wire ground obsolete. Offhand, I can't think of a situation where it is needed on a GFCI outlet. Too bad they are expensive ($20 here) and consume several dollars worth of electricity per year forever.
  • you don't plug a motor home into GFI's
    I do it all the time. If it trips the GFI, there's a problem that should get fixed.
  • I would not use any power other than the convertor when using the 15/30 adapter. very poor connections. The convertor runs a couple amps ( mine is a cheap one that came with the unit) and if you turned on the refer you add about 3 amps. That would be all I would use. No air cond, micro, water heater. Recently I spent about 2 hours finding why a friends GFCI was tripping and found out the waterheater element had a slight leakage to grd. Had to remove both wires to allow MH to be plugged into the house gfci outlet. Those gfci outlets are there for your safety. Don't work around them.
  • RoyB wrote:
    You need to use one of these to test your house 15A receptacle before plugging into it.




    Also always insure all three conductors are being used on the adapters. Some folks have cut the GROUND off of an extension cord or adapter.

    I would never use a small round adapter but rather use a RV30A-15A long 'dogbone' type adapter (WALMART has them). The small round adapter always seem to get HOT for me and I was afraid of burning up my 30AMP shore power plug.


    This is what I use to adapt to the 30-AMP RV plug from the 120VAC 15A receptacle or from the end of a 50-foot long HD Extension Cord (10-3) plugged into the house 15-AMP receptacle.


    You don't want your 30AMP SHORE POWER PLUG to look like this from overheating the contacts.


    Just my experience plugging into the house/garage 15-AMP receptacle.

    Roy Ken


    Roy, I would suggest that you had faulty wiring job in that 30 amp male plug in. I say that because the blades on the 30 amp male connector are twice the size of the blades on the 15 amp male connector. So it is impossible, with twice the material for conductivity, for that male plug to get hot. Also, both blades should have melted on that 30 amp plug, not just one, since they both flow equal amounts of current. If anything, if you are overdrawing, the 15 amp male plug should have been the resistance point and been the plug that started melting.

    I think you got a bum wiring job on that 30 amp male plug, that was causing the resistance and the heat, and the melt on one blade.
  • RoyB's avatar
    RoyB
    Explorer II
    You need to use one of these to test your house 15A receptacle before plugging into it.




    Also always insure all three conductors are being used on the adapters. Some folks have cut the GROUND off of an extension cord or adapter.

    I would never use a small round adapter but rather use a RV30A-15A long 'dogbone' type adapter (WALMART has them). The small round adapter always seem to get HOT for me and I was afraid of burning up my 30AMP shore power plug.


    This is what I use to adapt to the 30-AMP RV plug from the 120VAC 15A receptacle or from the end of a 50-foot long HD Extension Cord (10-3) plugged into the house 15-AMP receptacle.


    You don't want your 30AMP SHORE POWER PLUG to look like this from overheating the contacts.


    Just my experience plugging into the house/garage 15-AMP receptacle.

    Roy Ken
  • my prowler has burned out every gfci that I've plugged it into changed to a 15 amp receptacle and hav'nt had any more problem
  • Popeye--That's what the Progressive tech suggested. I've got 2 adapters. Won't need them when I leave and plug directly into a 30 amp.
  • Get another adapter,preferably with a short cord as those are much better than the cheap shorties.
    Good Luck, Mike

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