I supply a manufacturer of high quality cable cutters, but his product line is more geared to manually operated cutters, mostly for the electrical and telecommunication industries. I reached out to the owner for an opinion. He offered:
Quote:
Depends what kind and how much--- but

Generally there isn't alot of generic cutters that size.
He's probably looking at high pressure hydraulic equipment
similar to "jaws of life". If steel cable - I'd burn it with a torch.
If copper or aluminum - I'd invest in the hydraulics for volume
and use a band saw ( portables available) for low to med. quantities.
Telecom cable even manual tools will do it up to about 3.5".
We make them.
Does he have to do it in the field? A shear or a punch press
would take the work out of it. Lots of tons required to shear
5" dia. cable.