Reply to "Theoretical Electrical Questions: Do more feed wires means less heat?"

I pass on one other thought:  You are going to have to be especially careful in wire management.  I only have a single feed t each block, plus 2 wires from control panel to each switch motor, plus accessory wiring.  Under my table is a hideous maze of wires, making tracing a task.   When you run your triple 18s, I recommend that you have handy a pack (or 2 or 3) of small wire ties and tie the 3 wires together every foot or so.