What is a Busway and It's Purpose?

 

Example of Distribution System 
Photo: Siemens


The busway is defined by the National Electrical Manufacturers Association (NEMA) as a prefabricated electrical distribution system consisting of bus bars in a protective enclosure, including straight lengths, fittings, devices, and accessories. Busway includes bus bars, an insulating and/or support material, and a housing.


A major advantage of busway is the ease in which busway sections are connected together. Electrical power can be supplied to any area of a building by connecting standard lengths of busway. It typically takes fewer man-hours to install or change a busway system than cable and conduit assemblies.


Photo: Siemens

The total distribution system frequently consists of a combination of busway and cable and conduit. In this example power from the utility company is metered and enters the plant through a distribution switchboard. The switchboard serves as the main disconnecting means. 


The feeder on the left feeds a distribution switchboard, which in turn feeds a panelboard and a 480 volt, three-phase, three-wire (3Ø3W) motor. The middle feeder feeds another switchboard, which divides the power into three, three-phase, three-wire circuits. Each circuit feeds a busway run to 480 volt motors. The feeder on the right supplies 120/208 volt power, through a step-down transformer, to lighting and receptacle panelboards. 


Branch circuits from the lighting and receptacle panelboards supply power for lighting and outlets throughout the plant. In many cases busway can be used in lieu of the cable/conduit feeders at a lower cost.


Photo: Siemens

Busway is used in various applications and can be found in industrial installations as well as high-rise buildings. Busway used in industrial locations can supply power to heavy equipment, lighting, and air conditioning. Busway risers (vertical busway) can be installed economically in a high-rise building where it can be used to distribute lighting and air conditioning loads.


Reference: 

  • Siemens

12 comments:

  1. I’ll check back from time to time to check if you add more nice information to your post. electrical contractors in biloxi

    ReplyDelete
  2. Positive site, where did u come up with the information on this posting?I have read a few of the articles on your website now, and I really like your style. Thanks a million and please keep up the effective work. https://itprospt.com/windows-10-headphones-not-showing-up-in-playback-devices

    ReplyDelete
  3. Brighton Electrical Pros knows electricity. We suggest doing your homework when searching for a reliable and knowledgeable electrician near me contractor near Brighton MI. Have questions or concerns? Give us a call! We are always available to support the residents of Brighton MI and surrounding areas.

    ReplyDelete
  4. The wiring behind your walls is a complex lifeline and one which should only ever be tackled by a registered and fully qualified electrician. So everyone should use services from professional Electricians.

    ReplyDelete
  5. Make the most of mainly premium substances - you will find him or her for: https://oomnex.com/oomnex-led-light-therapy-dome

    ReplyDelete
  6. I've proper selected to build a blog, which I hold been deficient to do for a during. Acknowledges for this inform, it's really serviceable! Rust

    ReplyDelete
  7. If a residential electrician has been in business for several years, this gives you an indication that they’ve earned the trust of their customers over a considerable amount of time and over the course of hundreds of jobs. Electrical Contractors

    ReplyDelete
  8. Electrical contractors are some of the most important people on a job site. They are responsible for the design, installation, and maintenance of electrical systems in a construction project. An electrical contractor is also responsible for ensuring that the systems are safe, functional, and environmentally friendly.Electrical help Tonypandy

    ReplyDelete
  9. The various electronic items such as home theaters, refrigerators, air conditioners, microwaves, laptops, mobile phones and tampa electricians tabs etc. contain a huge cost so people always prefer to test these electronic things before buying but that is very much time consuming.

    ReplyDelete
  10. looking for automotive electrical wire? I highly reco amwire visit their website for more info.

    ReplyDelete