How do busbars operate?
Busbar trunking falls into two categories – distribution and feeder busbar. Distribution busbar distributes power through tap-offs points along the length of the busbar at typically a 0.5 or 1.0 metre centres. Tap-off units are simply plugged in along the length of the busbar to supply a load, (this could be a sub distribution board or in the case of a factory, to individual machines). Each individual tap-off can normally be added to or removed with the busbar live, thus eliminating production down time. Used vertically the same systems can be used for rising-mains applications, with tap-offs feeding individual floors. (Certified fire barriers are available at points where the busbar passes through a floor slab). The fact that the protection devices (fuses, switch-fuses or circuit breakers) are located along the busbar run, reduces the need for large quantities of distribution cables running to and from installed equipment. High power feeder busbar takes power directly from A to B. Usu
