A Rising Main is a vertical electrical power distribution system commonly used in multi-storey buildings to deliver power from the main electrical panel—typically located in the basement or ground floor—to individual floors or distribution boards. It serves as the backbone of vertical power distribution, ensuring that lighting circuits, power sockets, HVAC units, elevators, fire systems, and other essential loads receive a reliable supply of electricity throughout the building.
Rising Mains can be constructed using either armored cables (Cable Rising Main) or busbar trunking systems (Busbar Trunking Rising Main). While cable-based systems utilize XLPE or other insulated cables enclosed in conduits, busbar trunking systems use enclosed copper or aluminum busbars within a metallic trunking enclosure. The busbar type is generally preferred for high-rise and commercial buildings due to its compact design, lower voltage drop, better heat dissipation, and ease of maintenance.
The primary purpose of a Rising Main is to provide safe, organized, and efficient vertical power distribution, reduce voltage losses, and avoid the clutter and complexity of running multiple cables floor-by-floor. These systems are widely deployed in residential towers, office buildings, hotels, hospitals, shopping malls, and industrial facilities with multiple floors.
At Amtech Power, we offer robust, custom-engineered Rising Main solutions tailored to site layout, load requirements, and building codes—ensuring long-term reliability, easy scalability, and safe operation in modern vertical infrastructure.
A Rising Main (or Rising Mains) is a vertical power distribution system used in multi-storey buildings to distribute electrical power from the main panel (usually at the ground floor or basement) to individual floors or distribution boards. It is often a busbar trunking system or cable system enclosed in a protective duct or shaft.
| Purpose | Description |
|---|---|
| Vertical Power Distribution | Distributes electrical power across multiple floors |
| Reduced Voltage Drop | Minimizes power loss over long vertical runs |
| Neat and Organized Wiring | Avoids cable clutter by centralizing vertical feeds |
| Essential for Services | Used for lighting, sockets, HVAC, lifts, fire systems, etc. |
Cable Rising Main – Uses armored cables like XLPE in conduits
Busbar Trunking Rising Main – Enclosed copper/aluminum busbars (preferred for high-rise)
High-rise residential buildings
Office towers
Hospitals
Hotels
Shopping malls
Industrial complexes
