Found it! Thanks for the comments guys.
http://thinkmoult.com/2010/09/27/the-gi ... -tutorial/I think the tutorial was made in an earlier version of GIMP because of the way the lines were done to make the segments. The way I did the lines was Filters>Render>
Patterns>Grid and just set the vertical to 0 and adjusted the line spacing and line thickness. Made it really simple, otherwise a fairly easy tut to follow.
Yes, I was trying to make the cable look like MC cable but you are right. MC has a full sized ground wire and even BX has a small aluminum drain wire. I may have to make a couple of small changes to the pic. I was thinking that the composition could use something like some corroded metal gears here and there to give it more of an industrial feel.
I made a set of open circle brushes, some feathered on the inside, to stroke a path and just experimented to make the cable. Due to the multiplication effect of the circle brush, I got this really dark edge so to remove it, all I had to do was adjust the brush just a tad bigger than I needed and then do an alpha to selection/shrink/delete to make it look right.