Don't use any cable. Just don't. Bolt cutters will go through them like they are cheese. I see so many remnants of them in Cambridge. Unless the cable is 1) of the type for mooring a car ferry/oil tanker or 2) a full on motorbike lock which are also pretty heavy but even these could be cut, don't use them. Always use a quality D-lock. These can be identified as Abus preferably the Granit X Plus or Extreme models.
Do Keep upYour Security friend may be right. I had the double braided cable made by aerial mast riggers at work, the padlock is a Master M187 60mm shrouded. they use power ratchet croppers to shear the cable, and metal ends were crimped to make loops
The cable in question is used to keep 60m masts from swaying in high winds, it took a pair of powered croppers cut the cable when it was made for me.