The AC termination cable is used to connect the first APsystems microinverter in the branch circuit to the AC junction box. The 6ft long cable features a Magnum Energy connector in the end connecting to the microinverter and bare wire in the end connecting to the junction box. Inside the UV resistant jacket there are 3 (red, black and white) 12WAG conductors. The type TC-ER cable is UL certified rated for 600V. One cable is requiered for each branch circuit. A maximum of 7 dual microinverters (or 14 solar panels) can be connected in one branch circuit.