The APsystems microinverter solution provides a complete line of approved products and accessories to meet the needs of any PV application. The YC600 & QS1 AC Bus Trunk Cable connects the AC output side of the inverter to the grid link. One Bus Trunk Cable is required for each YC600 & QS1 Microinverter. The junction box connects one end of the AC bus to the other, which is covered with a Bus End Cap. A Y-CONN Cap should be used to seal any unused connectors.