As the name says, there are two bus bars, bus 1 and bus 2, as we can see in the diagram, each bay or equipment such as a line, or a transformer is connected to both the buses, through breaker and isolators to each bus. This quest for dependability requires studies in order to master, from the design stage, the behaviour of their components in the light of their environment and of possible operating. A Busbar System is an arrangement of solid metallic conductors used to collect and distribute electrical power efficiently within a power system. A busbar is a thick copper or aluminum bar that carries large amounts of current. Multiple circuits are connected to this bar to receive or supply power. Vehicular traffic includes travel through parking facilities, into and out of parking spaces, into and out of electric vehicle charging spaces, and along roadways, driveways and drive aisles. Designing a substation involves not only the visible equipment and ratings but also the less apparent factors—operational. During the design phase of an electrical system using cables and/or busbars carrying high currents, it may be of interest, for mechanical reasons, to calculate the maximum force acting between two busbars placed near each other. I attached picture for better understanding.