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ProModeler Scorpion Power
dunkonu23

Senior Heliman

Michigan, East of Hell

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Hi everyone,

I'm posting this post event as I want to find out if anyone besides me was adversely affected by the power problems at the site 3 campground. It's here because I would like to get the widest exposure.

I used a "dogbone" by request to convert the 50 amp connection to the 30 amp connection my RV needs. I did this because I was leaving Friday and another person needed the 30 amp connection on the power stand I was assigned (they stacked RV's at site 3). What happened to me was something I have never heard of -- the female connection of my dogbone became welded to the male connection of my RV's power cord.

So if anyone had issues with power, please let me know either via this thread or via PM. Thanks! I am not impugning AMA at all. I want to know for piece of mind as I've already filed a claim with AMA.

Scott

PS My surge suppressor showed no error code. Dogbone had never been used and is made for purpose. I have also posted this on the other forum in an effort to find out if anyone else but me or my neighbors had problems.

Team Compass USA - Field Rep, Spartan Vortex,Team Scorpion,Team KBDD

08-08-2016 11:10 PM
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Jerry K

Key Veteran

Houston Area

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I am sorry I do not know exactly what a 'dogbone' is but I am assuming it is an adaptor that converts from one connector to another of a different amperage and/or splits one 50a into 2x 30a.

I do know electrical. I surmise that you had a lose connection. Lose connections create heat and deform the plastic that forms this type of connector causing them to appear to be welded together.

You stated the connector was new but that doesn't prevent all problems from occurring. You also stated you have filed a claim. What damage was done resulting in a claim?

Avoid the 'default' settings in life, Fat Dumb and Poor!!!

08-09-2016 12:54 AM
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dunkonu23

Senior Heliman

Michigan, East of Hell

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Jerry,

The dogbone I used converts 50amp into 30amp. The connections were good, however I am assuming that arching caused the welding. Once get to a position where I can plug the motor home into an outlet again, I will check for more damage. As of now, it's only the power cord and the dogbone which are damaged beyond repair. Both will be replaced this weekend.

Scott

Team Compass USA - Field Rep, Spartan Vortex,Team Scorpion,Team KBDD

08-09-2016 01:34 AM
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dunkonu23

Senior Heliman

Michigan, East of Hell

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Hi everyone,

I just heard from Adam, the site 3 host for IRCHA. He told me no other issues were reported!

Thanks everyone!

Scott

Team Compass USA - Field Rep, Spartan Vortex,Team Scorpion,Team KBDD

08-09-2016 03:11 AM
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Danny Calderone

Key Veteran

South Jersey

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I agree with Jerry. A loose connection is the most likely cause. I would suspect the new dogbone adapter was faulty from the manufacturer. It may have felt as though terminal tension was sufficient, but the internal connection within the adapter to that terminal could have had a weak crimp or have been pulled apart slightly during the overmolding process. You're better off assembling your own adapters for these purposes. For piece of mind if nothing else.

Danny Calderone. AREA138

08-09-2016 05:11 AM
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bobbyhill4x4

Senior Heliman

Watertown NY

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If the dog bone is what I call the 30 Amp adapter, I have had this problem before and my RV dealer explained that it should be used only to run limited items. I only use this adapter when loading the camper at home to maintain the batteries and run the refrigerator. I have had problems with campgrounds power but it was usually due to a loose connection.

08-09-2016 08:44 AM
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Danny Calderone

Key Veteran

South Jersey

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As long as the adapter is connecting a higher amperage rated source and adapting it to a lower rated line in shore power connection, there should never be a problem... so long as the system is properly engineered. What you wouldn't want to do is connect a potential 50 amp load to a supply circuit rated for 30 amps for obvious reason. It would never be recommended, but it could safely be done with some calculation to ensure there were no chance of the system drawing more than 30 amps even at inrush currents for things like AC system startup. To my point of a poorly engineered system, the bottom line is, if a 30 amp shore power connection at the RV end is overheating and there is not a high resistance (loose or corroded) termination in the connection, there is an excessive demand on the line in and it should be upgraded to 50 amps. This will included wire size and not just the plug itself.

Danny Calderone. AREA138

08-09-2016 02:32 PM
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Heli_Splatter

Key Veteran

Silver Spring, MD by way of Sidney, Ne - USA

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I think that you need to evaluate your load side. Previously when you were plugged into 30amp outlets, you were limited by a supply side circuit breaker as to how much power you could draw. This time, you were plugged to 50amps. The "dog bone" does not limit the current draw, you have to monitor draw yourself. Very easy to plug in too many items. Big chargers can suck a lot of juice.

Others have suggested a loose connection, that could well be. Or the entire power cord got hot and fused from drawing too much amperage at the plugin connection.

08-09-2016 03:04 PM
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old nitroman

Senior Heliman

Naples florida

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I run a large marina almost same plugs, we have 50amp and 30 amp here 99% of the time when this happens the plug not connected all the way, most of these plugs push in then turn clockwise 1/8 turn that locks the ears in side the plug. If there just pushed in will not be long til it burn the tip off and melt the plug. I have seen this with brand new plugs, they do not go in far enough to turn.

E5s and E7se, Roban bell 222 800 superscale,450 bell 4 bladed head,gobby 380,180cfx

08-09-2016 03:09 PM
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dunkonu23

Senior Heliman

Michigan, East of Hell

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Power draw: Never exceeded 27amps--that was when the AC, water heater, and microwave were running at the same time. Normal draw is around 5 or 6 amps. I don't charge at the motor home, so that's not an option for cause. My motor home has automatic load shedding based on current draw. I saw no indication it was ever used. I am going to check all the power connections to both my surge suppressor and transfer switch, then replace the power cable in its entirety. I will never use a dogbone again.

The connectors for 50 and 30 amp hookups with RV's do not twist, they simply plug in.

I had no indication of a problem until I went to unplug when we were leaving.

Scott

Team Compass USA - Field Rep, Spartan Vortex,Team Scorpion,Team KBDD

08-09-2016 03:45 PM
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Danny Calderone

Key Veteran

South Jersey

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It's reasonable to suspect you just had a faulty adapter.

Danny Calderone. AREA138

08-09-2016 04:09 PM
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dunkonu23

Senior Heliman

Michigan, East of Hell

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Completely reasonable to nail the adapter. It's literally toast anyway.

Scott

Team Compass USA - Field Rep, Spartan Vortex,Team Scorpion,Team KBDD

08-09-2016 06:26 PM
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Flymore

Heliman

Mishawaka IN - USA

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There were some other power issues to. Apparently some electrical current were present in (one?) the showers that caused the showers (and restrooms) to be shut for the event. For people like me that rely on the facilities it was not a pleasant experience in this heat.

08-10-2016 01:31 AM
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