I found this answer on the following:
4135
FAQ
Q. There are 2 larger red wires in positions 001 and 002 on the DC fuse board. Which one is for the
battery?
A. Position 001 is for the
battery and position 002 is a larger wire that can accommodate a DC load up to 30 amps max. All of the rest are 20 amps max.
Don't know if this helps. It is for the PD 4135 Power Center.