In article .com,
says...
I imagine one issue is current sharing between the conductors. Whilst
the current share may be close to 50/50 when installed, any slightly
loose connection or corrosion of one conductor could cause one
conductor to end up carrying most of the current. not good.



bodge
But could be avoided by running each pair from a separate fuse, each one
rated at the maximum safe load for one pair?
/bodge