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JimSouCal
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Re: How to wrap your EVSE/other cables! (You're doing it wro

Wed Oct 31, 2012 2:43 pm

TLeaf wrote:A great bit of cable management wisdom! I've been wrapping my cables and hoses like this since the late '80's when I was shown the correct way by a local television crew.


Added trivia: indeed, multi-strand audio and video cables are wrapped over under, but set-electric (lighting-electrical dept) cords are coiled one way about the diameter of a basketball for storage, however, while usually stored the same way, the larger cables, known as banded, 00# and 0000# are figure 8 coiled while under load (to avoid AC transformer effect and heating due to the same).

Some of the generally accepted practices of the past would horrify some, like intentionally shorting two heavily charged DC charged carbon rods, while wearing welding gear, together, to simulate lightning (impressive and quite dangerous as a shower of hot carbon sparks pluming and the 500 amp generator strains under the load)--nowadays done with xenon strobes instead. Given there was usually a rain rig in operation, at least the DC was less deadly.

Why not over under and this way when it makes no sense? The because rule: because "that is the way we do it"?

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Ingineer
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Re: How to wrap your EVSE/other cables! (You're doing it wro

Wed Oct 31, 2012 3:05 pm

There is no "transformer effect" when using banded or multiconductor cable. Now, if you are using singles, and for whatever reason, they aren't run as a group, this may be possible.

For heating reasons, you don't want any wrapping, you want it spread out. A "serpentine" layout is best.

"Old habits die hard"; People in-general definitely resist change and prefer to do things "the way they've always done it". This obviously includes buying cars powered by petroleum.

-Phil
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HarryHouck
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Re: How to wrap your EVSE/other cables! (You're doing it wro

Sat Nov 10, 2012 12:28 pm

On long extension cords I do the elbow/hand method with a figure eight. Works on smaller diameter wires over a Vulcan hand salute.

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Ingineer
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Re: How to wrap your EVSE/other cables! (You're doing it wro

Fri Nov 16, 2012 1:20 pm

HarryHouck wrote:On long extension cords I do the elbow/hand method with a figure eight. Works on smaller diameter wires over a Vulcan hand salute.
This is still a lot of internal twisting, and not good long-term, especially for large cabling like our EVSE's have.

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caross
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Re: How to wrap your EVSE/other cables! (You're doing it wro

Wed May 29, 2013 8:36 am

Well, I just learned something new!

thanks
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Gearscout
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Re: How to wrap your EVSE/other cables! (You're doing it wro

Sat Jun 22, 2013 11:42 am

Very instructional video.

The advice is excellent.

But for an audio "expert" adept at wrapping up the band's XLR cables, the audio on this video presentation is absolutely abysmal. The hum and ambient noise indicate the expertise ends at the XLR3 plug.

;-)

But, sincerely, thank you for the "over/under technique" video!

That's a wrap!

mbutter
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Re: How to wrap your EVSE/other cables! (You're doing it wro

Sat Jun 22, 2013 8:09 pm

DoxyLover wrote:Over-under is the proper way to wrap cables. If you worked on a TV crew working with the (older) many-conductor cables, you learned to do over-under or were reassigned/fired. Those cables were expensive, full of small gauge wires, and hard to repair.


Former broadcast engineer here... Yep, over/under was the only way to handle any video/audio/data/power cable (if cable reels were not being used). Anyone volunteering to help strike cables after an event were quickly trained on proper technique, or invited to go 'help someone else' if they did not cooperate.
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Eyeresearch
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Re: How to wrap your EVSE/other cables! (You're doing it wro

Thu Feb 20, 2014 12:33 pm

I worked in the oilfield as a diver and that's exactly how we coiled our ultrasonic gear, camera cables with the over and under method but when called for on a much larger format on our surface supplied dives we would figure 8 the air hoses right on the deck, basically the same principle of “relaxing the lay” this technique also was used for our diving bell umbilical lines (multiple lines taped together), knots are not your friend . Over and under is such a foreign concept to the unfamiliar, they look at you funny but some can get the hang of it.

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Re: How to wrap your EVSE/other cables! (You're doing it wro

Thu Feb 20, 2014 1:20 pm

Thanks for the info, I haven't wrapped cables elbow over wrist for a long time, I just used that little velcro strap that comes with the portable evse to hold the end then I begin, and just spool the cable hand over hand like a hose or cable reel does, and I spooled it out in reverse. I tried the over under method with some 6 gauge wire we had laying around at work and it was kind of hard to get it to wrap up and form a coil. It seems to work better with the more flexible cables. I think I'll put this over under method in my toolbox of skills though. It's a very good way to do it. But I will still remember the hand over hand coiling method, because in some situations it works better too.
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Re: How to wrap your EVSE/other cables! (You're doing it wro

Sat Feb 22, 2014 7:01 am

As this thread is quite old now (recently added to) I'd be interested in knowing how folks have got on in practice with this technique.

The reason I ask is because I was using this from the outset with my leads but found it was not hugely efficient. It may be effective, but you only need a half dozen loops in a 5m cable. So by the time you made the first loop or two in a 'non-clever' way just lifting and coiling it, you've already done a half of the cable.

So I dropped the technique shown above for EV cables and I simply roll and rotate the first couple of loops, place that in the boot of the car while I go fetch the other end and do likewise, then fit the one half coil on top of the other. This allows for the cable to be lifted off the ground for more of the operation, keeping it cleaner. You have to note the loops and rotate the coils as you unwrap it, but I just found that the stiffness and relative shortness of EV cables did not particularly lend itself to this technique in the long run, and noticed that I was still getting kinks in it even though I was being very careful to wrap the cable only in the manner that put least twisting tensions on it.

Ultimately, you still can't avoid kinking entirely because every time a multi-core cable goes from straight to bent the interior cores have to shift very slightly relative to each other (else it wouldn't bend!). So over time these inner cores 'walk' and, as mentioned above, you have to warm the cable up, apply the minimum tension on it, then shake it back and forth so it flaps whilst also applying a gentle opposite twist to allow the cores to come back into their original relative positions, free of any residual forces between the cores and the sheath.

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