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Old 02-08-2016, 07:31 PM   #1
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Power plug melted

Last week I was drawing close to the full 30 amps using the heat pump and a 1500 watt heater in my MH. A bit later I left the rig and for some reason checked my power plug. It was more than warm. Shut everything down and unplugged it to find a melted plug. Immediately went and ordered a new plug, replaced it today and being ever curious about causes of this kind of stuff, tore into the plug. Found an obviously bad crimp on the black wire which is the main power in. So, if any of you fellow campers happen to notice this kind of problem with your power cord, consider replacing it as you're in for trouble in the future.
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Old 02-08-2016, 07:35 PM   #2
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Good thing you caught it early
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Old 02-08-2016, 08:03 PM   #3
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Could also be caused by a bad receptacle (loose connection) on the post. They get worn out over time.
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Old 02-08-2016, 08:21 PM   #4
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I was using my home hookup which doesn't get used and abuse like the campground receptacles. I agree that it could have been the receptacle but dissection proved otherwise. The crimp on the black wire shown to the right of the plug was loose. I could wiggle the wire in the crimp.
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Old 02-08-2016, 09:13 PM   #5
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Old 02-08-2016, 10:05 PM   #6
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Were you using an EMS?
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Old 02-08-2016, 10:37 PM   #7
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Yes
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Old 02-09-2016, 07:34 AM   #8
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Quote:
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Yes
That's not very encouraging. I would have thought it would have caught something like this.

Glad it did not cause further damage and no one was hurt.
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Old 02-09-2016, 07:42 AM   #9
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Quote:
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Yes
Curious which one.
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Old 02-09-2016, 07:59 AM   #10
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I keep a pretty close eye on the voltage in the RV even with an EMS. I'm always aware of what I have turned on so have a pretty good idea of the current draw. Neither voltage nor current draw was exceeded. This was an overheated connection caused by a bad crimp. Voltage was still being maintained for the duration.

PI PTC 30.

I've noticed a bit of discoloration before but never overheating like this.
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