Abrasive material is used for abrading cable insulation

[tylerfini3]

What type of abrasive material is used for abrading cable insulation?

Anyone have an answer to this

[gchoquette]

Anyone have an answer to this

Aluminium oxide sandpaper strips is what we used back when I was a cable splicer.
After sanding, we cleaned thoroughly with alcohol and we applied 3M silicone grease.

That was many years ago, so things may have changed.
https://www.sparkyabrasives.com/superior-abrasives-cost-control-shop-rolls-aluminum-oxide-50-yards-long/

[gchoquette]

Anyone have an answer to this

Another thing we did was to sand the conductor dull with the same aluminium oxide tape and used a product called Penetrox.

Because aluminium oxidizes in about 1/10th of a second, to make a good contact, we applied the Penetrox on the aluminium conductor, sanded it with the aluminium oxide sandpaper and crimped it right after.
Again, I am not sure if this method is still in use.

http://www.krimp-dsm.com/wp-content/uploads/2015/06/F2-F12-Accessories.pdf
https://www.tessco.com/product/4-oz-tube-penetrox-a-13-25478

Important note: Penetrox was for the conductor, not the insulator!
We applied 3M silicone grease to the insulator.

[Bespey]

did you have this on your NETAIV exam?

[tylerfini3]

did you have this on your NETAIV exam?

This was somehow on the NETA 2 test. I've noticed there are a lot of NETA 3&4 questions on the NETA 2 practice test.