110v Extension Cord...Is it worth buying. - Fiberglass RV


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Old 06-13-2008, 06:41 PM   #1
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I have the opportunity to buy a 110 v 50 amp 30 foot extension cord.This is new never used.They are asking $80.00.However the shipping charge is$54.00. a total of $134.50.To purchase from our local RV dealer the cost would be 236.93(inc pst.gst.)saving me $102.00.This seems like a good deal but my question is how often has anyone found it nessesary to use an extension cord at campsites....Our Boler cord is seventeen feet long.I am afraid this will limit us to sites close to an electrial outlet and as we do not have a battery on the trailer at this time would it be wise to purchase this extension cord. ...Thanks in advance for any help you could give....Pat.
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Old 06-13-2008, 07:03 PM   #2
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The first question is "Do I need 30Amps worth of 120VAC electricity?" and the answer to that is whether or no you have air conditioning.

The second question is "Will I ever be far enough from the electrical pedestal to need a longer cable when I am running my a/c?".

Were it me, I would be inclined to spend the money on a battery and a good 15 Amp 120VAC extension cord. With a battery, one can live "off the grid" for a while and enjoy the benefits of dry campgrounds like in Natl Forests. YMMV!!
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Old 06-13-2008, 07:16 PM   #3
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You will never need a 50Amp service for an egg.
We normally park within 5 feet of the camp ground receptacle and use a 12gauge 3 wire extension cord that is aroune 10 feet long.
We use a 10gauge cord (5ft) when we want to use my small generator to power the air conditioner.

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Old 06-13-2008, 07:42 PM   #4
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I have the opportunity to buy a 110 v 50 amp 30 foot extension cord.This is new never used.They are asking $80.00.However the shipping charge is$54.00. a total of $134.50.To purchase from our local RV dealer the cost would be 236.93(inc pst.gst.)saving me $102.00.This seems like a good deal but my question is how often has anyone found it nessesary to use an extension cord at campsites....Our Boler cord is seventeen feet long.I am afraid this will limit us to sites close to an electrial outlet and as we do not have a battery on the trailer at this time would it be wise to purchase this extension cord. ...Thanks in advance for any help you could give....Pat.
Your wasting your money.
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Old 06-13-2008, 07:48 PM   #5
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I don't know if this will help, but I found it informative. The recommendation is to remain less than 3% drop in a branch circuit. Use that as a max voltage drop. Here is a Calculator to see what happens.

http://www.csgnetwork.com/voltagedropcalc.html

When you buy standard 15 amp house hold extention cords they seem to be 16 AGW. You can start with that and go from there.

I started with:
16 AGW wire
120 Volts
25 feet (common length)
15 amps (electric heater or hair dryer, or electric griddle)

CALCULATE

3.7 Volt drop
116.3 volts
3.1% Drop - TOO MUCH VOLTAGE DROP!


Change to larger wire - 14 AGW = 1.9 Volt drop, OK.



Now try a New length:
50 feet.
14 AGW
3.8% Drop - again too much

This length, 50 feet, needs 12 AGW wire for 2.4% drop.

Does this make sense?

I hope it helps.



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Old 06-13-2008, 08:54 PM   #6
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I don't know if this will help, but I found it informative. The recommendation is to remain less than 3% drop in a branch circuit. Use that as a max voltage drop. Here is a Calculator to see what happens.

http://www.csgnetwork.com/voltagedropcalc.html

When you buy standard 15 amp house hold extention cords they seem to be 16 AGW. You can start with that and go from there.

I started with:
16 AGW wire
120 Volts
25 feet (common length)
15 amps (electric heater or hair dryer, or electric griddle)

CALCULATE

3.7 Volt drop
116.3 volts
3.1% Drop - [b]TOO MUCH VOLTAGE DROP!


Change to larger wire - 14 AGW = 1.9 Volt drop, OK.


Now try a New length:
50 feet.
14 AGW
3.8% Drop - again too much

[b]This length, 50 feet, needs 12 AGW wire for 2.4% drop.

Does this make sense?

I hope it helps.
In all cases above everything should have worked just. Most appliances are designed to work from 90 Volts to 130 volts.
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Old 06-13-2008, 08:59 PM   #7
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First, 50 amp service at RV sites is 220 Volt 4 wire. An adapter would be needed which changes connects to 1/2 of that 50 amp service. 25 Amp service now.

Second, I doubt that you'll ever need that much cord.

Third, I don't know about your Boler, but my Scamp would be hard pressed to draw much more than 5 amps.

Forth, A 25ft 30 amp extension is only $45US at camping world.

Short answer, it's probably not worth the money for you.
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Old 06-13-2008, 09:09 PM   #8
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Thanks to everyone who responded. I have decieded to buy a battery and forget the extension cord. I am so glad I found this site to help me over the bumps of new trailer ownership...
Thanks again, Pat
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Old 06-13-2008, 09:50 PM   #9
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My trailer has a 15 foot cord with a 30 amp RV plug. I carry a 25 foot 12 AGW extension cord just in case. With it I can run my air compressor, A/C, or Microwave, etc. when needed.

We have needed it a couple times. You may not. We have a big trailer.

How are you going to keep your Battery charged?
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Old 06-13-2008, 10:57 PM   #10
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My trailer has a 15 foot cord with a 30 amp RV plug. I carry a 25 foot 12 AGW extension cord just in case. With it I can run my air compressor, A/C, or Microwave, etc. when needed.

We have needed it a couple times. You may not. We have a big trailer.

How are you going to keep your Battery charged?
Good question...WEELLLL,I guess it will recharge as we drive and I think our converter recharges it .At least thats what the manual seems to indicate....I really have no idea.
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Old 06-14-2008, 03:11 AM   #11
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First, 50 amp service at RV sites is 220 Volt 4 wire. An adapter would be needed which changes connects to 1/2 of that 50 amp service. 25 Amp service now.
Umm, not quite right -- 50A @ 240VAC yields two 50A @ 120VAC circuits.

BulgeMobiles with dual, large a/c, microwaves, etc., use a cable with 50A240VAC plug on one end and two 50A120VAC circuits on the other so they can run two a/c's simultaneously. OTOH, if they want to run the big 240VAC welder, they have to plug into the CG pedestal.
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Old 06-14-2008, 08:10 AM   #12
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my question is how often has anyone found it nessesary to use an extension cord at campsites....Our Boler cord is seventeen feet long.
In most Ontario Provincial Parks, you are going to need more than the 17'. They have a tendancy to put one post between two lots in really weird places.
Princess Auto has a 50' 14/3 extension cord on sale for $27. And a 25' 12/3 for $20 but that one has a 3 outlet end.

IMO the 50' would serve your needs. I'd be tempted to get that, with 2 additional ends and cut it down to say 27' and 23' lengths. That would give you 17', 23', 27', 40', 44', 50' and 67' runs.
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Old 06-18-2008, 05:40 PM   #13
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In most Ontario Provincial Parks, you are going to need more than the 17'. They have a tendancy to put one post between two lots in really weird places.
Princess Auto has a 50' 14/3 extension cord on sale for $27. And a 25' 12/3 for $20 but that one has a 3 outlet end.

IMO the 50' would serve your needs. I'd be tempted to get that, with 2 additional ends and cut it down to say 27' and 23' lengths. That would give you 17', 23', 27', 40', 44', 50' and 67' runs.

We camp in Ontario Provincial Parks all the time, the power posts are fitted with both the 50amp, 4 pole plug and 120v, 3 pole. Our tent trailer has a 4 pole plug (way overpowered ). We can plug directly to the power post or useing a 4 pole to 3 pole adapter we can use a 3 pole extension cord, which is usually the case, and as Roy said the power posts are usually more than 50' away. For my money adding the adapter with a 50' 3 pole extension cord (garden variety) is all you will need. The largest appliance we plug in is a 1500 watt electric heater.
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Old 06-19-2008, 11:41 PM   #14
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and as Roy said the power posts are usually more than 50' away.
Here's a heads up on a deal.

Got the new Princess auto flyer in the mail today. Next weeks sale has a 100' 12/3 SJTW heavy duty extension cord on sale for $75 plus exta ends are on sale for $1.99 ea.
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