This guide provides a complete breakdown of the standardized process for high and low voltage switchgear installation. We'll detail every key step, from initial preparation to final checks. Key Steps: When wiring a pair of 12V busbars, connect the positive terminal of each load to a stud on the positive busbar and their negative terminal to a stud on the negative busbar. This indicates the extent of the installation, such as the number of busbars and branches, and also their associated apparatus. The most common circuit configurations of high and medium-voltage switchgear. A busbar is a common electrical junction point used to consolidate multiple wires, acting as a central hub for power distribution.