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06-11-2018, 11:29 AM
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#1
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Seasoned Camper
Join Date: Aug 2017
Location: Dayton
Posts: 66
M.O.C. #20338
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50 amp Extension Cord
We may be camping in a spot we will require a longer electrical cord for 50 amp service. I wont use one if not necessary.
Any suggestions or concerns in this situation.
Should I buy a manufactured cord or build it myself? I have the wire but need yo buy the ends.
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06-11-2018, 11:33 AM
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#2
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Montana Master
Join Date: Oct 2006
Location: McKinney
Posts: 7,167
M.O.C. #6433
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There is no problem using a well made extension cord. I bought one since I wanted molded waterproof connectors on such end. Got lucky and found a good sale at the same time I anted one.
__________________
Bill & Patricia
Riley, our Golden
2007 3075RL (recently sold, currently without)
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06-11-2018, 03:16 PM
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#3
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Montana Master
Join Date: Sep 2013
Location: Pensacola (mail forward service)
Posts: 3,198
M.O.C. #13740
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I bought mine and have had no issues. Have had to use it several times when I run into a rv park that has its pedestals too far forward...as now at harpers ferry koa.
__________________
2012 F350 6.7 L dually, 2013 3800RE with 6 pt leveling, Sumitomo 17.5" load range h tires, Samsung 18 cu ft residential fridge, 8k Morryde I.S. with disc brakes. Full timing since 2012.
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06-11-2018, 04:13 PM
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#4
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Montana Master
Join Date: Jan 2005
Location: North Ridgeville
Posts: 20,229
M.O.C. #2839
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We carry a 50 amp extension cord with us at all times. It is of good quality. We have used it on many occasions since 2006 with not a problem.
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06-11-2018, 04:15 PM
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#5
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Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
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We carry a high quality one that I got on sale cheaper than what the plugs would cost to make it myself.
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06-11-2018, 05:33 PM
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#6
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Montana Fan
Join Date: Feb 2016
Location: Brookings
Posts: 313
M.O.C. #18275
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Same here..bought a 25 footer.....cheaper then I could make one.
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06-12-2018, 07:09 PM
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#7
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Montana Master
Join Date: Jan 2016
Location: STAYTON
Posts: 1,118
M.O.C. #18157
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Quote:
Originally Posted by mbjam359
We may be camping in a spot we will require a longer electrical cord for 50 amp service. I wont use one if not necessary.
Any suggestions or concerns in this situation.
Should I buy a manufactured cord or build it myself? I have the wire but need yo buy the ends.
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You cant buy the stuff to make them for what they cost.
Mark
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06-23-2018, 07:07 AM
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#8
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Established Member
Join Date: May 2018
Location: Newport
Posts: 45
M.O.C. #21746
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What lengths do you have? I'm looking at 15' but a 30' isn't that much more. Do you need to worry about line loss with a longer cord?
__________________
2018 Montana 3121RL, 35 feet of home away from home.
2018 Chevy 3500HD, 4WD, Double Cab, SRW, 8' bed, Summit White with stump pulling diesel.
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06-23-2018, 07:48 AM
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#9
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Montana Master
Join Date: Jan 2005
Location: North Ridgeville
Posts: 20,229
M.O.C. #2839
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We have two 15 foot extensions and have used them a couple of times at fair grounds . We did not see a loss.
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06-23-2018, 12:46 PM
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#10
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Montana Master
Join Date: May 2017
Location: new caney
Posts: 1,050
M.O.C. #19873
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Same here. I have the 15' extension cord and needed it every time i plugged in at home until i moved my pedestal closer. I've used the 15' a few times traveling but never needed more than the 15'. I've seen no problem with the 15' but you would have a little drop if using an 50' extension cord. I don't think i would go over 25' for an extension cord.
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06-23-2018, 01:16 PM
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#11
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Montana Master
Join Date: Oct 2006
Location: McKinney
Posts: 7,167
M.O.C. #6433
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Voltage drop is directly proportional to current and resistance, V=IR. Resistance for a 25’ 50 amp cord would be about 0.0004 ohms per foot of wire. About 0.02 ohms for length of the 25’ cable (25’ of wire for each direction = 50’). At full 50 amps the total voltage drop would be about 1 volt. At 25 amps the voltage drop would be about 0.5 volts. There would be another very small drop due to the additional plug connection. But that would be there whether the cord length was 15’, 25’, or 50’. Since you are not likely to be approaching full current you can see that voltage drop due to the extension cord is of little concern.
__________________
Bill & Patricia
Riley, our Golden
2007 3075RL (recently sold, currently without)
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06-23-2018, 02:35 PM
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#12
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Montana Master
Join Date: Jan 2005
Location: North Ridgeville
Posts: 20,229
M.O.C. #2839
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Quote:
Originally Posted by BB_TX
Voltage drop is directly proportional to current and resistance, V=IR. Resistance for a 25 50 amp cord would be about 0.0004 ohms per foot of wire. About 0.02 ohms for length of the 25 cable (25 of wire for each direction = 50). At full 50 amps the total voltage drop would be about 1 volt. At 25 amps the voltage drop would be about 0.5 volts. There would be another very small drop due to the additional plug connection. But that would be there whether the cord length was 15, 25, or 50. Since you are not likely to be approaching full current you can see that voltage drop due to the extension cord is of little concern.
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I was just going to say that.
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06-27-2018, 01:59 PM
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#13
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Seasoned Camper
Join Date: Mar 2014
Location: Copperas Cove
Posts: 68
M.O.C. #14165
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50 Amp Extensions
Look on Craigslists/Facebook Sales. Found mine on Craigslists, two 15 ft. Both nearly new. Guy was getting out of RV'ing. 1/3 d the price.
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06-27-2018, 02:42 PM
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#14
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Montana Master
Join Date: Jan 2018
Location: Northville, NY
Posts: 807
M.O.C. #21158
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bought a 15 foot extension when I came up 5' short at a park and had to step down to the 30amp extension I use at home just to keep the battery up. It was just an overnighter and no a/c needed, so no problem. I carry a 15' and 30' main and normally use the shortest one that will reach. I find the 15' works most of the time. Now I can go 45' if needed and I don't expect that to ever leave me short. If so I'll just boon-dock.
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06-27-2018, 03:07 PM
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#15
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Montana Fan
Join Date: Jun 2015
Location: Cedar Park
Posts: 135
M.O.C. #17531
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Heavy rascals aren't they......the 50 amps.
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06-27-2018, 04:17 PM
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#16
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New Member
Join Date: May 2018
Location: Madison
Posts: 7
M.O.C. #21847
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What’s a good price I should look for? Say a 30 foot extension.
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06-27-2018, 06:17 PM
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#17
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Montana Master
Join Date: Jan 2018
Location: Northville, NY
Posts: 807
M.O.C. #21158
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I paid $60 for my 15 footer.
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06-27-2018, 07:42 PM
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#18
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Montana Master
Join Date: Oct 2006
Location: McKinney
Posts: 7,167
M.O.C. #6433
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I caught a 25 footer on sale at CW for about $50. Less than half price. But that is rare.
__________________
Bill & Patricia
Riley, our Golden
2007 3075RL (recently sold, currently without)
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06-28-2018, 05:50 PM
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#19
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Established Member
Join Date: May 2018
Location: Newport
Posts: 45
M.O.C. #21746
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Thanks for your replies on extension cord lengths. I'm going with a 15' unit and if in the future I need a longer length, I'll just get another 15 footer. Is this forum great or what!
__________________
2018 Montana 3121RL, 35 feet of home away from home.
2018 Chevy 3500HD, 4WD, Double Cab, SRW, 8' bed, Summit White with stump pulling diesel.
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06-28-2018, 06:09 PM
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#20
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Montana Fan
Join Date: May 2018
Location: san andreas
Posts: 209
M.O.C. #21805
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Quote:
Originally Posted by BB_TX
Voltage drop is directly proportional to current and resistance, V=IR. Resistance for a 25 50 amp cord would be about 0.0004 ohms per foot of wire. About 0.02 ohms for length of the 25 cable (25 of wire for each direction = 50). At full 50 amps the total voltage drop would be about 1 volt. At 25 amps the voltage drop would be about 0.5 volts. There would be another very small drop due to the additional plug connection. But that would be there whether the cord length was 15, 25, or 50. Since you are not likely to be approaching full current you can see that voltage drop due to the extension cord is of little concern.
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i do not get it.
a extenson cord can have loss?
but hard wall wire does not?
or am i missing something here?
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