Combiner boxes are used as essential parts of solar powered devices. These boxes are mainly used for bringing of the output of multiple solar panels together. This array of combiner boxes are also required for consolidation of incoming power into single main feed for equal distribution of power to any solar inverter. This specific process of power distribution minimizes the usage of wires, reduces human effort and saves wastage of materials. These boxes are positioned between solar inverter and solar modules to avoid power loss. Maintenance cost of these industrial grade PV string boxes depends on the frequency of their usage.