smkettner wrote:
1/0 ampacity is at least 250 amps so yes it will work fine at 100 amps.
Keep it short and neat for best results.
http://www.genuinedealz.com/voltage-drop-calculator
The side to side run will cause some voltage drop and should be added to the inverter cable length calculation. Probably better overall to get all batteries in one compartment near where the inverter will be installed. Far better to lengthen the wire to the house loads and keep the inverter connection short.
Inverter is within 1-2 feet of the near batteries. See below pics