PV Busbar

In solar power generation, a busbar is a strip of platted copper that conducts electricity within a module, Panel, String Cells. The size of the busbar determines the maximum amount of current that can be safely carried. Busbars can have a cross-sectional area of as little as 0.8 mm2 in solar modules. the thicker bus ribbon is soldered so that it connects to the tabbing ribbon of each solar cell cluster. The tabbing ribbon collects electric current within its cluster of solar cells and delivers it to the bus ribbon. The bus ribbon then conducts the cumulative electric power from all of the solar cell clusters to a junction box for final output. Imagine tabbing ribbon as a road that travels across the solar cell. The bus ribbons serve as the highways to connect and tie them together. Bus ribbon is larger in cross-section because it has more electrical power to carry.