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03-20-2017, 12:16 PM
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#1
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Member
Join Date: Mar 2017
Posts: 54
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RV external power melting
HELLO,
We recently purchased a used 90 H.R. Monitor. We've been tuning our power from an external source but yesterday the plugs melted. We purchased new ones and they are getting warm, it not melting. We also replaces all of our internal breakers with new ones. What is causing this?
Also we finally got our generator running and yesterday near the rear breaker box I kept hearing a relay constantly tripping. Could this become an issue?
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03-20-2017, 12:30 PM
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#2
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Senior Member
Holiday Rambler Owners Club
Join Date: Aug 2010
Posts: 9,750
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Looks like you are trying to draw too many amps, from a 20 amp outlet.
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Ben & Sharon
2008 43' Holiday Rambler Scepter PDQ
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03-20-2017, 12:32 PM
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#3
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Senior Member
Join Date: Oct 2015
Location: Washington
Posts: 1,852
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Yes, pulling more amps then the plug is rated for.
I have had this issue in a few non-RV situations. Keep in mind that continuous use is typically rated at 80% of amperage listed. So the 15a plug pictured is only rated for 12a continuous.
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03-20-2017, 12:35 PM
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#4
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Senior Member
Monaco Owners Club
Join Date: Sep 2014
Posts: 4,569
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Get new plugs/cords and make sure to keep the Amps below 20. Get yourself one of these meters from harbor freight to help out. You should be able to run one AC if everything else is off IMO.
"Kill A Watt"™ Electric Monitor
__________________
1996 Tioga Class C
2007 Monaco Diplomat 40 PDQ
TOAD 2012 Cadillac SRX 4
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03-20-2017, 12:48 PM
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#5
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Member
Join Date: Mar 2017
Posts: 54
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My main cords going out are 30s and I have that adapter than converts to 15 but my roomate plugged that conversion into a 30a wall socket in the house. Should I move it to a 20a?
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03-20-2017, 12:49 PM
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#6
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Member
Join Date: Mar 2017
Posts: 54
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We got new plugs and cord's yesterday. Is it because we are running 3 little space heaters and our tv?
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03-20-2017, 12:55 PM
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#7
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Senior Member
Join Date: Oct 2015
Location: Washington
Posts: 1,852
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What do you mean plugged "into a 30a wall socket in the house"? Unless it is wired properly for an RV that could be a huge problem.
Your plug does not convert 30a to 15a, it allows you to plug into a 15a plug. You can only use the rated amount of the circuit and power cord you are plugged into.
Yes, 3 space heater is WAY over 15 amps. Very lucky you did not have a major fire. At maximum 15 amp is only 1800 watts. Read the labels on your heaters and see what the draw is.
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03-20-2017, 12:59 PM
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#8
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Senior Member
Join Date: Nov 2009
Location: Warren, Oregon
Posts: 2,560
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Quote:
Originally Posted by Skrewball
We got new plugs and cord's yesterday. Is it because we are running 3 little space heaters and our tv?
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One space heater is about the max you can have on 15A, not 3.
2 stroker
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2006 Country Coach Inspire 360 40ft Genoa Designer Series, Samsung 197 RR
Cat C9--STEEL & COPPER Bolt Together Radiator w/ updated rubber mounting
SilverLeaf 330 Magnum 2812 PSW 2011 Ford Edge Sport-Air Force One
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03-20-2017, 01:06 PM
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#9
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Senior Member
Tiffin Owners Club Workhorse Chassis Owner
Join Date: Oct 2009
Location: Warner Robins, GA
Posts: 2,613
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You also need to use a higher rated extension cord (yellow one) than the one in the picture. Also use the the shortest one that will reach.
Something like this (you can buy them in longer lengths if needed): https://www.lowes.com/pd/Utilitech-2...n-Cord/3203697
Jon
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Jon & Sue Francis (Retired U.S.A.F.)
Lil Girl-Rescued, Abby Rescued, Peaches Rescued
06 Allegro 35TSA Workhorse Chassis
2013 Chevy Spark Dinghy
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03-20-2017, 01:15 PM
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#10
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Member
Join Date: Mar 2017
Posts: 54
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Quote:
Originally Posted by Nwcid
What do you mean plugged "into a 30a wall socket in the house"? Unless it is wired properly for an RV that could be a huge problem.
Your plug does not convert 30a to 15a, it allows you to plug into a 15a plug. You can only use the rated amount of the circuit and power cord you are plugged into.
Yes, 3 space heater is WAY over 15 amps. Very lucky you did not have a major fire. At maximum 15 amp is only 1800 watts. Read the labels on your heaters and see what the draw is.
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What I mean is- the wall outlet in the garage is on a 30a circuit. Our cords from our mh is a 30a 30' ran into a Wal-Mart 30a plug that is converted into a 15a standard plug(commonly sold at walmart). < That plug extension(15a rating) is currently ran to a garage outlet that is on a 30a circuit.
Does that make a little more sense?
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03-20-2017, 01:25 PM
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#11
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Senior Member
Join Date: Oct 2015
Location: Washington
Posts: 1,852
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That is why you circuit breaker did not trip.
You are limited by the rating of your cords. The wiring is not heavy enough to carry more then 15a and is melting because the heat has to go somewhere.
Again without seeing your heaters actual draw, you are pulling well over 15a on a cord only rated for 12a continuous, which is less then 1500 watts.
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03-20-2017, 01:45 PM
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#12
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Senior Member
Join Date: Oct 2016
Posts: 113
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RV external power melting
Quote:
Originally Posted by Skrewball
We got new plugs and cord's yesterday. Is it because we are running 3 little space heaters and our tv?
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2 space heaters on low (750w each) or 1 on high (1500w) is all you can run off a decent extension cord
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1998 National Tradewinds 7370 Cat 3126B 300HP Allison MD 3060 Freightliner XC Chassis at about 80K Miles. Burning Dinosaur Bones One Gallon At A Time
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03-20-2017, 01:52 PM
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#13
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Senior Member
Tiffin Owners Club
Join Date: Mar 2015
Location: Southern NM
Posts: 2,514
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Nvm
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2005 Tiffin Allegro Bay 37DB
W22 Workhorse Chassis 8.1 Flat Towing a 82 Jeep CJ7
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03-20-2017, 01:56 PM
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#14
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Moderator Emeritus
Monaco Owners Club Texas Boomers Club
Join Date: Nov 2015
Location: Central Texas
Posts: 13,426
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Quote:
Originally Posted by Skrewball
What I mean is- the wall outlet in the garage is on a 30a circuit. Our cords from our mh is a 30a 30' ran into a Wal-Mart 30a plug that is converted into a 15a standard plug(commonly sold at walmart). < That plug extension(15a rating) is currently ran to a garage outlet that is on a 30a circuit.
Does that make a little more sense?
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If you truly have a 30 amp circuit--a 30 amp breaker, attached to a 10 gauge wire, you need to use a 30 amp plug. It's like a chain, it's only as strong as its weakest link, in this case the 15 amp plug.
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Dennis and Katherine
2000 Monaco Dynasty
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