A PV combiner box, also known as a photovoltaic combiner box or solar combiner box, is an electrical enclosure used in solar power systems. It is an important component in larger photovoltaic (PV) installations, particularly those with multiple solar panels or arrays. The primary function of a PV combiner box is to combine the output from multiple solar panels or strings of panels into a single output. It serves as a central connection point where the DC (direct current) outputs of the individua