Electrical rising mains play a crucial role in distributing power within multi-story commercial buildings. Let’s explore their key features:

  1. Function:
    • Rising mains deliver electricity across different levels of buildings, including hospitals, car parks, and apartments.
    • They ensure seamless power supply to various floors.
  2. Components:
    • Conductors: Rising mains use aluminum conductors with bimetal aluminum/silver-plated copper contacts.
    • Tap-off Outlets: Equipped with automatic shutters.
    • Robust Construction: Designed to handle up to 4000A and withstand adverse weather conditions.

An electrical bus duct, also known as a busway, provides an alternative means of conducting electricity in power distribution systems. It typically employs sheet metal, welded metal, or cast resin to enclose and isolate copper or aluminum busbars. These busbars carry substantial electrical currents, serving as pathways for electricity. Here are some key points about bus ducts:

  1. Purpose: Bus ducts are used to transmit electricity, acting as an alternative to power cables or cable buses.
  2. Construction:
    • The bus duct structure consists of a grounded metal enclosure.
    • Inside this enclosure, you’ll find copper or aluminium busbars.
    • These busbars may be separated with gaps or “sandwiched” together.
    • Individual busbars are often coated with non-conductive materials like plastic.
    • At connection points, busbars flare out to facilitate linking to the next segment.
  3. Variety:
    • Bus ducts can be rectangular (similar to cable trays) or circular.
    • Some systems allow plug-in devices (such as switches and motor starters) to be easily moved, providing flexibility for changes in industrial setups.
    • Bus ducts can also power plug-in light fixtures and even IoT devices.
  4. Applications:

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