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08-10-2018, 06:58 PM
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#1
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Junior Member
Join Date: Aug 2018
Location: Atwater, ca.
Posts: 12
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30 amp extension cord
I want to extend my shore power cord with a 30 amp RV extension cord I bought at Wal Mart. It has the plugs at either end to plug to the trailer cord and just extend it. I have a 30 Amp pedestal at the house and need the additional length. It's a 25 foot extension. Anyone see any potential problems?
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08-10-2018, 07:09 PM
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#2
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Senior Member
Join Date: Sep 2010
Location: Eastern Ontario
Posts: 4,167
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No issues with a 25 foot extension. Is your 30 amp pedestal receptacle at the house is 120 volts? It should be.
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Fonzie
2011 Rockwood 8319SS with ProPride 3P hitch/GoodYear Marathons/TST TPMS 507
2019 F350 Ruby Red 6.7l diesel 3.31 axle electronic locker
Yamaha 3000iseb generator:Progressive Ind. EMS-HW30C : Eastern Ontario
Nights Camped: 2014 (18) 2015 (18) 2016 (36) 2017 (32) 2018 (42) 2019 (28) 2020 (35)
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08-10-2018, 07:43 PM
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#3
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Senior Member
Join Date: Jan 2017
Posts: 3,290
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nope, thats what its for
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The Turners...
'07 Rockwood Signature Ultralight...
two Campers and two Electric cars : )
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08-10-2018, 09:09 PM
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#4
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Junior Member
Join Date: Aug 2018
Location: Atwater, ca.
Posts: 12
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Thanks for the feedback.
The pedestal is 120V.
Joe
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08-10-2018, 10:13 PM
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#5
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Senior Member
Join Date: Aug 2016
Location: Bow WA
Posts: 769
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no problem - I've had to use an extension cord at RV parks.
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08-10-2018, 11:01 PM
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#6
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Certified Curmudgeon
Join Date: Mar 2013
Location: Here
Posts: 3,999
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Used one for 5 days straight at My Old Kentucky Home SP. Have EMS and had no issues with the 50’ stretch to the pedestal.
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Mike Dropped
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08-10-2018, 11:14 PM
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#7
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Senior Member
Join Date: Jun 2018
Location: Southern Illissouri
Posts: 922
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I use my 30' 30 Amp cord all the time here at home... it's the only way to reach the receptacle with the camper in it's "normal" spot.
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Brian & Becky
2018 Avenger ATI 27RBS
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08-10-2018, 11:51 PM
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#8
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Senior Member
Join Date: Jun 2011
Location: Big brown desert
Posts: 3,003
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Use our 50’ all the time to get the unit cooled down in our heat.
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2014 Stealth Evo 2850- "Woodstock"
2011 Toyota Tundra Rock Crawler TRD 5.7- "Clifford"
2013 Honda Accord Coupe V6 w/Track Pack- "Julia"
Just glad to get away
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08-11-2018, 01:15 AM
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#9
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Senior Member
Join Date: Jun 2017
Location: Central Minnesota
Posts: 141
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I have a 30 Amp 50' extension cord that I use along with the original 25' cord. Use it regularly at a particular campground we visit. No problems.
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2016 Coachmen Viking Legend 12RB A-Frame
2015 Jeep Grand Cherokee Summit w/Tow package
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08-11-2018, 03:56 AM
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#10
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Site Team
Join Date: Mar 2008
Location: Southwest Alabama
Posts: 9,850
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Having a total of 50' of #10 wire at 30 amps will have a voltage drop of 2.5% (3 volts), so that's well within the allowed voltage drop. However that doesn't take into account the run from the breaker to the receptacle.
100' of #10 wire at 30 amps will have a voltage drop of 5% which is the max allowable.
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Salem 29RKSS Pushing a GMC Sierra 2500HD!
Gotta go campin!
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08-11-2018, 12:33 PM
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#11
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Junior Member
Join Date: Jun 2018
Location: Mineola Tx
Posts: 29
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We never travel without one. You only make that mistake once. Be prepared.
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08-11-2018, 01:07 PM
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#12
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Senior Member
Join Date: Jul 2018
Posts: 273
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I prefer to keep the coach and extension cord plugs, where they connect, dry. The connection point can be covered to shed rain away, but not wrapped up where moisture and condensation can form.
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08-11-2018, 01:36 PM
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#13
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Junior Member
Join Date: Oct 2013
Posts: 22
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two cords not the same as one longer cord
Keep in mind that adding an extension cord is also adding an additional male and female plug to the circuit. This will drop your voltage a little more than if it was one cord. If your shore power is a little low on voltage to start with, it could be a problem by the time the power is in your trailer. With things running in the unit it is always good to check the voltage in the unit. All plugs and even the female outlet of your shore power are not created equal.
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08-11-2018, 03:46 PM
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#14
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Senior Senior Member
Join Date: Jul 2015
Posts: 288
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Quote:
Originally Posted by Bama Rambler
Having a total of 50' of #10 wire at 30 amps will have a voltage drop of 2.5% (3 volts), so that's well within the allowed voltage drop. However that doesn't take into account the run from the breaker to the receptacle.
100' of #10 wire at 30 amps will have a voltage drop of 5% which is the max allowable.
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That's exactly why I used #8 wire when I installed my RV outlet which is 70 feet from the main breaker box. Actually was not that much more money.
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2015 Flagstaff Super V 26VFKSS Emerald... SOLD
Now camping with a new SOB Winnebago pulled by a 2021 Ford Ranger.
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08-11-2018, 10:58 PM
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#15
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Senior Member
Join Date: Feb 2014
Posts: 2,832
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X2 on Splitshafts' post...Keep the connection sealed and weatherproofed when you are using it at home for extended periods.
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________
Cam
2015 Georgetown 280DS
2019 Vespa Primavera 150's (pair)
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08-11-2018, 11:39 PM
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#16
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Senior Member
Join Date: Apr 2016
Location: Port Charlotte Fl/Hinsdale Ma
Posts: 4,823
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Quote:
Originally Posted by Bama Rambler
Having a total of 50' of #10 wire at 30 amps will have a voltage drop of 2.5% (3 volts), so that's well within the allowed voltage drop. However that doesn't take into account the run from the breaker to the receptacle.
100' of #10 wire at 30 amps will have a voltage drop of 5% which is the max allowable.
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08-12-2018, 08:21 AM
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#17
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Senior Member
Join Date: Sep 2016
Location: Colorado
Posts: 1,306
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Be sure to occasionally check the plugs for heat. If you feel one getting hot, shut it down. Have had the plug ends build up resistance and burn the terminals under load.
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2003 Duramax
2017 Crusader 315
2016 Boston Whaler Montauk 150
Former Montana owner
Colorado Cruiser, Over the Pass and Down the Hill
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08-12-2018, 08:43 AM
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#18
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Site Team
Join Date: Mar 2008
Location: Southwest Alabama
Posts: 9,850
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Quote:
Originally Posted by Comanchecreek
Be sure to occasionally check the plugs for heat. If you feel one getting hot, shut it down. Have had the plug ends build up resistance and burn the terminals under load.
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X2. It's a good idea to check the plugs and receptacles on a regular basis, even if you're not using extension cords.
You should also check the ends on any cordsets and plug-in devices on a regular basis.
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Salem 29RKSS Pushing a GMC Sierra 2500HD!
Gotta go campin!
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08-16-2018, 03:37 PM
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#19
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Senior Member
Join Date: Oct 2016
Posts: 278
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Related question, can I put my portable Progressive 30 amp power management unit between the extension cord and the 20' fixed cord from the motorhome, allowing me to lock it inside a storage area? I realize that's an additional two plugs in the system. Thoughts.
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2005 Forester 2901
2005 Scion XB
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08-16-2018, 03:57 PM
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#20
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Site Team
Join Date: Mar 2008
Location: Southwest Alabama
Posts: 9,850
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You can, but remember that you're also adding the length of the cord to the circuit. That may or may not be an issue.
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Salem 29RKSS Pushing a GMC Sierra 2500HD!
Gotta go campin!
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