Welding cable is usually classified as a
type of industrial power cable. It's much more flexible than THHN wire
or any type of electrical wire. There are two types of flexible welding
that I'll tell you about and a few other types of power cable that are
very similar.
Welding is made with 30 awg bare copper strands for
added flexibility. It has a rubber insulation which is also more
flexible than PVC insulation on electrical wire. It's fairly well known
that it's more flexible than battery cable but welding cable has a extra flexible, heavy duty cable as well.
Super
Vu-Tron has 34 awg bare copper strands to make it even more flexible
than the standard. Super Vu-Tron also has a much tougher insulation
because it's meant for the job site where it might be run over and
dragged on concrete or other rough surfaces. It only comes in an orange
jacket unless you want to have it specially made in a different color.
If you did that it would be about a 15,000-25,000 foot minimum run
quantity.
Another similar type of power cable is known as DLO
cable, or Diesel Locomotive. The difference is the flexibility and
thickness in insulation for added protection. DLO cable is much less
flexible than welding
cable because it's only made with 24 awg strands of tinned copper wire.
The 24 awg strands are much bigger than the 30 awg welding cable
strands so the DLO cable won't be nearly as flexible. Locomotive cable
is actually 2000 volts instead of 600 volts to provide more power to the
application.
There are still many other types of single
conductor power cables such as stage lighting cable and Type W. Then you
can get into the multi conductor power cables like SO cable and
portable power cord products. Those are similar to the extension cords
you might have in your home except they're made much more rugged and
labeled as an industrial power cable.