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just me

Salt Lake City Utah USA

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Posted: 06/27/08 02:34pm Link  |  Quote  |  Print  |  Notify Moderator

I saw on here where the electrical cord was coiled in a basket, and also a bucket to keep it under control, and not all over the place. I have a fellow camper that noticed mine coiled in a bucket and he said that was a good idea but might be hurting the out put on the other end.
What he was referring to was that there is resistance in the coiled cord like a wire wrapped around a nail and causing an electro magnet, thus resistance, and impeding flow of the electricity to its fullest.
What do you think?

fact or fiction?
I don't know so I am asking the Experts. [Ex being a has bin] [pert being a small drop of water]


95 Dodge CC #5 TST plate Flame Red/Silver not totaly stock 2007 fiver Tag Ma-haul [has been suggested for a name]

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wayne_tw

South Dakota/Georgia

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Posted: 06/27/08 02:59pm Link  |  Quote  |  Print  |  Notify Moderator

Fact. Actually, that is the basis of a transformer, wire coiled around itself creating resistance. However, I think the issue is minimal worst case.

ejforwood

Littleton (Denver) Colorado

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Posted: 06/27/08 03:04pm Link  |  Quote  |  Print  |  Notify Moderator

The resistance in the line is there whether coiled or not. What is not there until coiled is impedance. Yes an ac current through a coiled inductor will cause a magnetic force to be induced into an iron core, ie. the nail, but your 25 ft cord will not loose potential because you coiled it up, or at least not to an amount that you can measure. At the point it might loose potential, you would also notice it giving off heat. Part of the confusion is that resistance and impedance are both measured in ohms.
A wiser man once said, "A little knowledge is a dangerous thing!"
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NCHornet1

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Posted: 06/27/08 03:15pm Link  |  Quote  |  Print  |  Notify Moderator

I agree nothing to worry about.

NCH


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GSF

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Posted: 06/27/08 03:16pm Link  |  Quote  |  Print  |  Notify Moderator

The problem is not with the electrical output. The problem with an coiled electrical cord is that coiling creates resistance and resistance creates heat. How much heat depends on a lot of variables.


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kaydeejay

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Posted: 06/27/08 03:37pm Link  |  Quote  |  Print  |  Notify Moderator

GSF wrote:

The problem is not with the electrical output. The problem with an coiled electrical cord is that coiling creates resistance and resistance creates heat. How much heat depends on a lot of variables.
Not so much the coiling that creates resistance but it does concentrate any heat being generated in the cord when it is passing a heavy current.
Enough to be a problem - I doubt it, but enough to warrant a check at some point.


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garry1p

Broken Arrow, OK, USA

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Posted: 06/27/08 03:44pm Link  |  Quote  |  Print  |  Notify Moderator

Depends on the length of the cord and load.

If it gets hot then it is a problem no heat no problem.


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AlanB

Sierra Vista, AZ

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Posted: 06/27/08 03:47pm Link  |  Quote  |  Print  |  Notify Moderator

Coiling the cord does not cause any problems. The wires inside the power cord are always out of phase and the induced magnetic affect cancels out. This is one of those "urban legends" that has been around a long time.


AlanB
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j2catfish

Newport, NC, U.S.of.A.

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Posted: 06/27/08 04:01pm Link  |  Quote  |  Print  |  Notify Moderator

Coiled power cord will not make any difference as staed above - the magnetic field induced by current flowng in on the "hot" wire is canceled by the opposite polarity magnetic field caused by current returning to the source via the white wire. Now, if you tightly coil up your Citizen Band coax, or your satellite coax, you might notice some power loss.
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GSF

full-timing in North America

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Posted: 06/27/08 04:13pm Link  |  Quote  |  Print  |  Notify Moderator

AlanB wrote:

Coiling the cord does not cause any problems. The wires inside the power cord are always out of phase and the induced magnetic affect cancels out. This is one of those "urban legends" that has been around a long time.

If you're going to spread erroneous information, do it on something that doesn't involve safety. Here's a link to an Electrical Engineering firm and their view of the subject. Read item #6.
Link:
And here's a link to a pamphlet from the state of Vermont, Division of Fire Safety. Link:

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