Double busbar wiring is a substation configuration where two busbars (conductive bars that serve as common connection points for multiple circuits) are used to distribute electrical power. Here, we provide an overview of common substation busbar configurations—Single Bus, Main and Transfer, Double Breaker/Double Bus, Ring Bus/Ring Main, and Breaker and a Half. Hence we use bus bars, where these connections can be done spaciously and. Learning about the functions of double busbars. Practice correct switching/changing sequences safely for humans and equipments. The selection of the schemes is in general affected by following aspects: Degree of flexibility of operations desired.