Cable Jacket Repair 1

[TugboatEng]

It's late at night, I'm pulling the last cable of the job. I'm walking back along the cable run amd I see a large cut in the jacket.

Apparently the vinyl coating on one of the stainless bands wore through and cut the jacket of the cable. What kind of repair would you do in this case? Luckily the end is only about 25 feet away so I plan to just slide a piece of heat shrink tubing up the cable but what if that was not an option?

For specifics, this is standard 600v shipboard cable with PVC jacket. The diameter is roughly 0.6". Actual voltage conveyed is 24.

 

[ScottyUK]

Something like this is the normal way to do it:

https://www.3m.com/3M/en_US/company...Wrap-Sleeve-HDCW/?N=5002385+3294230525&rt=rud

Not sure it will go small enough though.

 

[TugboatEng]

Here is a picture.

 

[MikeHalloran]

So that's what all that damn metal braid was for...


Mike Halloran
Pembroke Pines, FL, USA

 

[waross]

In the link, click on "Jacket Repair Range"
There are some that are listed from 0.39 to 1.28 inch.
Link


Bill
--------------------
"Why not the best?"
Jimmy Carter

 

[Compositepro]

https://en.wikipedia.org/wiki/Self-amalgamating_tape

 

[catserveng]

Since this is a marine rated cable on a vessel you should probably use an approved repair material like this,

https://www.mcmaster.com/#1402t13/=1bgze3v

I usually carefully cut away the damaged jacket and inspect the conductors before I repair, then use two layers, first cut to the same length as the removed cable jacket, put it in place and shrink it down then slide a longer piece over it and shrink it down, i try to have at least two diameters of overhang on each end if possible. If you're going to bend it in a cable tray like you picture you may need to warm it up a bit.

Hope that helps, MikeL.

 

[JG2828]

I agree with Compositepro, that self fusing tape is amazing. Not sure if it is "approved" but this stuff is very useful to have around. It never gets sticky or dries out like electrical tape.

https://www.amazon.com/X-Treme-Tape...d=1518057647&sr=8-4&keywords=self+fusing+tape

 

[TugboatEng]

I don't think the self-fusing tape is ideal for cable in a tray. The tape doesn't have enough abrasion resistance to tolerate having other cables pulled against it.

 

[TugboatEng]

"So that's what all that damn metal braid was for..."

No, it's so you can't use a tone generator to trace cable.

 

[JG2828]

TugBoatEng. You are correct. I don't think it would be very abrasion resistant since it is somewhat soft. But to be fair the existing jacket doesn't seem to be very abrasion resistant

 

[catserveng]

A couple of links you may find helpful,

https://multimedia.3m.com/mws/media/750847O/scotch-cable-jacket-repair-tape-2234.pdf

http://industrial.southwire.com/en/...ure-600-volt-and-mv-cables-using-3m-2234130c/

https://www.wireandcabletips.com/cable-harness-repair-made-easy/