The installation of a power busbar consists in the following steps: Select the busbar material, Size it (busbar section, number of busbars per phase) and define its position in the switchboard based on the client's incoming devices, Install it in. The installation of a power busbar consists in the following steps: Select the busbar material, Size it (busbar section, number of busbars per phase) and define its position in the switchboard based on the client's incoming devices, Install it in. Busbars are the backbone of a low-voltage switchboard: rigid conductors that collect and distribute current safely between incoming devices and outgoing feeders. In most assemblies you will find horizontal main bars, vertical risers, neutral and equipment-ground buses, and purpose-designed. A busbar is a metallic strip or bar, typically made from copper or aluminum, that conducts electricity within a switchboard, distribution board, substation, or other electrical apparatus. Its primary function is to distribute power from incoming feeders to outgoing feeders. The busbar shims and hardware bag in the cubicle packaging. MNS Light W can be equipped with: – starters and distribution units of withdrawable design (W units) – distribution units.