Low voltage power systems with inverters can have very high current flows in the cables that connect the inverter to the batteries. Large AC loads like mircowave ovens, toasters, irons, and washers can cause an inverter operating on a 12 VDC battery to draw 300-500 amps at start up. Using proper size wire between batteries, and from batteries to the inverter, will enable proper operation of the appliance. Cables that are too small will limit the current avaliable to the inverter and may prevent a large load from operating.
Use these cables between a battery bank and an inverter, fuse or power center. They have flexible stranded UL listed copper wire and 3/8" diameter lugs. Lug barrels are covered with glue-filled heat-shrink at each end.
Use cables with 1 lug to connect a battery to a compression connection.