Rising electrical mains to the main electrical power cables that are installed in a multi-story commercial building. Typically the main power supply cables will come into the building underground and will be accessible in the building through a specially built raceway.
At each floor, there will typically be a tap-off to supply power to each floor. The rising mains will run the entire height of the building. Raising Main work must be done according to the National Electrical Code (NEC).
Busduct is a sheet metal duct with aluminium or copper bus bars, and used as a reliable link for transferring power from one equipment to other at desired voltage levels. It is used as an alternate means for conducting electricity to cable bus and power cables.
Busduct are classified into various types depending on its application viz isolated phase Busducts, segregated phase busducts, non-segregated phase busducts