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Old 12-29-2014, 11:40 PM   #1
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Is there a problem with transfer switch?

Ok, my coach is parked at my sister's place because I actually use it when I visit on the weekends. It also is great for other overnight family visitors.

I am using a 12v battery charger to keep the batteries topped when the furnace runs during the night. It's working very well, so far.

I did want to try 110v shore power but ran into a problem when I hooked up the dog bones to bring 50 amp down to 15.

I have one of those plug in voltage testers with the analog needle that indicates of there is sufficient voltage in any outlet plugged into.

I am getting great voltage from the extension cord from the shed. However, the plug in meter shows just shy of acceptable voltage when plugged into any of the coach outlets.

Any guess as to why I get good from the extension cable and not in the coach?

1999 HR Endeavor 37WDS
Handicapped Lift Equiped
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Old 12-30-2014, 01:46 AM   #2
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I would check the voltage coming out of the dog bone, assuming of course there is nothing running that would bring the voltage down. How long and what guage is the extension cord? What is running in the rv? Do you have a way to check how many amps (kill-a-watt meter) are being used? On a side note can you post a picture of you handicap lift, I am thinking out install one.

Mark Taylor
1999 Bounder 32H Ford V10, 2012 Ford Focus, Pretty DW, 2 cats. Retired USAF
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Old 12-30-2014, 07:17 AM   #3
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I am going to check that with my voltmeter this weekend. I may also pop the cover on the transfer switch and see if there's a way to test output voltage from that.

Lift pictures:

1999 HR Endeavor 37WDS
Handicapped Lift Equiped
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Old 12-30-2014, 08:17 AM   #4
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The problem is caused by using an extension cord that is too small and/or too long.
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Old 12-30-2014, 04:58 PM   #5
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You can also check voltage at the load center (breaker box). It's only a short wire away from the shore cord and should have the same voltage.
Gary Brinck
2004 American Tradition; 2014 Buick LaCRosse
Homebase in the Ocala Nat'l Forest near Ocala, FL
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Old 12-30-2014, 05:24 PM   #6
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Did you remember to reduce the voltage setting on your converter/inverter to the 15 amp setting? That will reduce the draw by the converter to a lesser amount for keeping the batteries fully charged. That may be chewing up a large portion of your voltage with nothing leftover for the coach.

Remember that you will be limited to what you can power up with only 15 amps available.

When troubleshooting voltage or amperage you should always start at the power source and work towards the coach checking each item that is in line with the power supply.

Dr4Film ----- Richard

2002 Monaco Windsor PBT 40Ft. (R HOME) - 30Ft. 2006 Pace Trailer (R JUNK). Trailer Has 06 VUE (R TOWD) 04 Victory Alen Ness Edition (R RYDE). Full-Timer for 14 Yr's BUT now a Part-Timer. Cummins ISC-350 With Banks Power Pack and Upgraded PRXB PacBrake.
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