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10-11-2020, 05:23 PM
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#1
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Rivet Master
2000 30' Excella
GTA
, Ontario
Join Date: Feb 2019
Posts: 507
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Anybody else have the power cord melting on the 30 Amp extension Cord?
I replaced the female end of my 50ft 30 amp extension cord, because 1 leg (I assume the hot leg) was slightly melted, I test fitted a blade in it and it was loose ( spread out) the Male plug on the trailer is old looking but Clean, but understandably brown on the same spot.
So we do use the A/C this summer But not the fridge or water heater or microwave during the 30'C heat.
So I chocked it up to much draw by the AC for a lone time of use 3- 1 week trips All during AC season.
I noticed it was melting and slightly deformed, test fitted a blade and it was loose, Ordered an female end replaced it, and last week We used the heat pump ( so AC) and while in hooking noticed it was melted again? But tight connection still ( with a blade test)
AC voltage tested with my Fluke meter was 111v ac
So I guess maybe we are drawing to much current with the Convertor, AC (heatpump), and maybe a popcorn air popper for 5 minutes OR no A/C , instead a electric 1500 watt heater, and convertor?
If this is in the spec. The next step is to clean and tighten all connections at the 30amp panel, replace the female (again) replace the male on the trailer cord (anyways)
__________________
#4286 Stella the 2000 30ft Excella/Classic - Tow Vehicle - 2020 GMC Denali 1500 Duramax 3.0l Diesel, ProPride3 WDH.
previous tow vehicles 2012 Mercedes Benz GL350d - CanAmRv.ca hitch Reinforcement, 2005 Ford F150 Lariat 5.4L
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10-11-2020, 06:05 PM
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#2
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2 Rivet Member
2021 27' International
Carrollton
, Texas
Join Date: Jul 2020
Posts: 53
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Time to get a clamp on probe for that Fluke and see what the amerage draw is. Something isn't quite right.
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10-11-2020, 06:41 PM
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#3
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Rivet Master
2007 30' Classic
KW
, Ontario
Join Date: May 2012
Posts: 997
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If the connection is loose it will a cause a higher resistance point therefore heating up. I had this on my 100' foot cord. Replaced the end and got a better quality connector and now there's no issue.
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10-11-2020, 06:49 PM
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#4
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4 Rivet Member
2018 30' Classic
Williamsburg
, VA
Join Date: Dec 2019
Posts: 331
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I recommend the smartplug. It holds the connector tighter and won't sag along with having larger connections to allow higher amperage. Also a voltage monitor and protector that will disconnect with low voltage (higher amperage) to provide protection. I like the one from progressive industries.
I had a plug melt on a previous trailer. One campground I frequent has low voltage in the summer with everyone running their AC. I learned my lesson and with the above it hasn't happened again.
__________________
2018 Classic 30
2012 F250 6.7l
US Army Watercraft Engineering Officer
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10-11-2020, 06:50 PM
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#5
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old/new member
Austin
, Texas
Join Date: Jun 2007
Posts: 67
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plugged into a 30 amp breaker circuit at the source end?
If there is a problem internal to the trailer the internal breakers may not protect any over current.
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10-11-2020, 07:37 PM
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#6
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Rivet Master
2022 25' Flying Cloud
NCR
, Ontario
Join Date: Feb 2017
Posts: 3,099
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After a warm cable with oem chord
I replaced it with the smartplug
No issues In three yrears
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10-12-2020, 09:22 AM
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#7
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Half a Rivet Short
2017 30' Classic
2022 Interstate 24X
Carlisle
, Pennsylvania
Join Date: May 2017
Posts: 15,735
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Hi
Replace both connectors (male and female). They should fit tight, if they don't one or the other is defective.
The wires need to get tightened down *hard*. It's amazingly easy to not quite get them tight enough.
If by some weird chance, you have aluminum ( or aluminum core ) wire then the connectors will need to be designed for aluminum wire. A normal copper connector will not do the trick ( = it will be prone to overheat).
Having a multimeter handy when doing this sort of thing is a really good idea. If you don't already have one (and know how to use it), this is a fine excuse to spend the $20 to buy one. A clamp amp meter would cost a bit more. They are not vital, but still a good thing to have.
Bob
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10-12-2020, 12:31 PM
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#8
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2 Rivet Member
2019 27' Flying Cloud
Yorba Linda
, California
Join Date: Oct 2015
Posts: 36
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Melted 30 amp cord
I had the same problem with my 2015, 27 ft flying cloud. But it wasn't the cord it was loose wires at the plug on the trailer. I took the plug off the as and torqued the connectors and solved my proplem.
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10-12-2020, 01:20 PM
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#9
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:SPACE A" S/O 11 Air19745
2006 34' Classic S/O
Fort Worth
, Texas
Join Date: Feb 2007
Posts: 1,766
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Make sure your circuit breaker wires a tight in the screw down lugs and the buss bar side contacts are pinching down tightly.
guskmg
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10-12-2020, 01:25 PM
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#10
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Wolfwhistle
Margaritaville
, Banana Republic
Join Date: Jul 2018
Posts: 705
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I haven't wanted to spend nearly $200 on the Smart Plug, but I will eventually, I am sure. It is a very nice piece.
While replacing the converter with a PDI Li version, I noticed (inside the power distribution center) several neutral wires were loose to the point of getting hot. With the power off, I would check every wire termination for tightness; including at the breakers. Not related, but you could check the DC connections while in there. Disconnect shore and battery power for this work.
FE
__________________
Is taking it all with you, really getting away from it all?
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10-13-2020, 04:58 AM
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#11
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Rivet Master
2004 30' Classic Slideout
2021 33FB Classic
Colleyville
, TX
Join Date: May 2005
Posts: 1,540
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We had that happen once!
I learned not to plug in another source of heat, in this case a portable heater, and not to turn it up to full power! While it was quiet, it did weld the plug to the 30amp extension cord!
Happy trails!
__________________
In dog years, I'm dead!
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10-13-2020, 05:54 AM
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#12
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Rivet Master
2018 28' International
Fayetteville
, Georgia
Join Date: Jan 2018
Posts: 829
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Once a connector has been damaged both sides need to be replaced. When connecting, make sure the breaker is off at the power pole. Once everything is connected, turn the breaker back on. The plug on the power pole is often an issue. Do not connect your power cord to a loose or burned receptacle.
__________________
brick
2018 International Serenity
Cute wife...
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10-13-2020, 08:55 AM
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#13
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2 Rivet Member
2005 25' Classic
Conroe
, Texas
Join Date: Aug 2011
Posts: 47
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corrosion might be an issue
This happens a lot on boat shore power cords, particularly the ones moored in salt water. High current draws are partly to blame but actual overcurrent issues should be protected by the breakers on both ends. The heat is coming from additional resistance, generally at the plugs.
Obviously you can look at the male end and sandpaper it off but the female end of a jumper is a bit more problematic. About the only way I've found to check them is to plug in another jumper and check the resistance. If you just stick a test lead into the female end, you might scratch through the corrosion. I've never found a decent way to clean them although you could probably try muratic acid.
If its the connection at the power pole, you can disconnect the shore power at the main breaker and test the resistance between the individual breaker and the female end of a known good jumper.
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10-19-2020, 05:43 PM
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#14
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4 Rivet Member
1999 28' Excella
Lake Mary
, Florida
Join Date: Mar 2008
Posts: 256
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You need to measure the voltage both at the source and inside the RV. Nothing melts unless poor (corroded, loose connections) or high amperage (result of too much power use - watts, or low voltage
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10-25-2020, 12:02 PM
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#15
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2 Rivet Member
2014 22' FB Sport
South Shore
, Massachusetts
Join Date: Dec 2014
Posts: 52
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melted cord
Yes my cord welded itself to the outlet because of loose connections at the outlet (inside the airstream). I notified airstream and they reimbursed me the $179 for a new cord and outlet. The loose connections are a potential fire hazard.
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10-25-2020, 01:10 PM
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#16
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2 Rivet Member
Seattle
, Washington
Join Date: Feb 2013
Posts: 41
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I was going along for 4+ years watching others report melted plugs at the female end saying to myself they just need to make sure that plug is firmly seated and twisted...idiots!
Well, it happened to me one outing. My standard 30 amp twist on plug melted and there was potential for fire.
Replaced it with the SmartPlug and all is good. However, one needs to pay attention when DIY installing the SmartPlug, especially when inserting the wires and tightening them down. There have been reports of burning, but it's not the fault of the SmartPlug, but rather the installer.
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10-25-2020, 05:06 PM
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#17
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2 Rivet Member
2002 34' Classic S/O
sault sainte marie
, Michigan
Join Date: Jul 2015
Posts: 91
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Quote:
Originally Posted by wrhnco68
This happens a lot on boat shore power cords, particularly the ones moored in salt water. High current draws are partly to blame but actual overcurrent issues should be protected by the breakers on both ends. The heat is coming from additional resistance, generally at the plugs.
Obviously you can look at the male end and sandpaper it off but the female end of a jumper is a bit more problematic. About the only way I've found to check them is to plug in another jumper and check the resistance. If you just stick a test lead into the female end, you might scratch through the corrosion. I've never found a decent way to clean them although you could probably try muratic acid.
If its the connection at the power pole, you can disconnect the shore power at the main breaker and test the resistance between the individual breaker and the female end of a known good jumper.
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Try and old skool points file in the female plug (unplugged, I should say), but you are only trying to remove corrosion or dirt, so don't open up the clearances. Loose connections will overheat, particularly under a heavy load, generally, whether a screw connection or a friction connection.
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10-25-2020, 06:45 PM
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#18
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2 Rivet Member
2018 25' International
Knoxville
, Tennessee
Join Date: Oct 2016
Posts: 28
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This happened to ours as well, so we moved to the Smart Plug x 2.
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10-25-2020, 06:57 PM
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#19
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Rivet Master
South East
, Michigan
Join Date: Apr 2016
Posts: 551
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I suspect you built up some oxidation or pitting on your connection over the years resulting in the first instance. That occurrence worsened the situation and resulted in the more substantial melting on the second plug.
I'm working to keep my setup safe by periodically applying contact cleaner into the socket along with some lubricant. I closely watch the blades on my plug looking for pitting or oxidation. I also always apply a squirt of contact cleaner to all pedestals that I connect to.
When I do start experiencing issues on my trailer, i will upgrade to the Smart plug or whatever may be on the market when I need it.
__________________
Al
2017 29' SOB, 2022 Platinum F-150 SCrew, ProPride
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10-25-2020, 07:07 PM
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#20
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New Member
1992 29' Excella
Bradenton
, Florida
Join Date: Feb 2019
Posts: 2
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Connection resistance
Something I picked up dealing with high current 12 and 24 volt DC applications so I apply it to any of my high current electrical connections, I apply permatex copper anti seize lubricant to the terminals. I have seen in the “DC” connection application that it provided a more conductive Connection which in return reduced resistance and temperature. Just my 2 cents
P.S. really like this site and the info on here is invaluable to us newbies like me
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