Connecting to photovoltaic combiner box

Mount the combiner box and secure it with four screws, as shown below. Use 4–10 mm2, 600 V insulated cables. Strip 8 mm of cable insulation. Ground the combiner box by connecting it to the inverter. [pdf]

Metal wire in photovoltaic panels

The best metals for electrical wire cables are Silver, Copper, and Aluminum. Silver is the best but also very expensive and would not be commercially viable for installing domestic solar systems. [pdf]