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Old 06-11-2018, 11:29 AM   #1
mbjam359
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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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Old 06-11-2018, 11:33 AM   #2
BB_TX
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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.
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Old 06-11-2018, 03:16 PM   #3
jcurtis934
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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.
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Old 06-11-2018, 04:13 PM   #4
richfaa
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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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Old 06-11-2018, 04:15 PM   #5
DQDick
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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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Old 06-11-2018, 05:33 PM   #6
cpaulsen
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Same here..bought a 25 footer.....cheaper then I could make one.
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Old 06-12-2018, 07:09 PM   #7
MARK A
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Quote:
Originally Posted by mbjam359 View Post
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.
You can’t buy the stuff to make them for what they cost.

Mark
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Old 06-23-2018, 07:07 AM   #8
Wyatt Earp
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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?
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Old 06-23-2018, 07:48 AM   #9
richfaa
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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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Old 06-23-2018, 12:46 PM   #10
Texan
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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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Old 06-23-2018, 01:16 PM   #11
BB_TX
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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.
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Old 06-23-2018, 02:35 PM   #12
richfaa
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Originally Posted by BB_TX View Post
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.

I was just going to say that.
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Old 06-27-2018, 01:59 PM   #13
worleyjrtx5
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Smile 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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Old 06-27-2018, 02:42 PM   #14
DebNJim B
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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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Old 06-27-2018, 03:07 PM   #15
saber707
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Heavy rascals aren't they......the 50 amps.
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Old 06-27-2018, 04:17 PM   #16
Jbbev
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What’s a good price I should look for? Say a 30 foot extension.
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Old 06-27-2018, 06:17 PM   #17
DebNJim B
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I paid $60 for my 15 footer.
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Old 06-27-2018, 07:42 PM   #18
BB_TX
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I caught a 25 footer on sale at CW for about $50. Less than half price. But that is rare.
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Old 06-28-2018, 05:50 PM   #19
Wyatt Earp
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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!
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Old 06-28-2018, 06:09 PM   #20
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Quote:
Originally Posted by BB_TX View Post
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.
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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