Distribution of electrical energy
The lighting and electrical design of elementary school is divided into following parts: electrical design, lighting design, fire alarm design, and telecom design. The school’s electrical system will consist of three-phase 480/277V power and three-phase 208/120V power. The incoming utility feed is assumed to be three-phase 4,160 Volt.
This incoming feed enters the building from the Park Avenue street side of the building running parallel with the natural gas, water, and telecommunications utilities.
The service terminates in the building’s main electrical room which is centrally located in the basement level. At the unit substation which consists of a main service breaker-disconnect, a 750 kVA delta-wye transformer, secondary breaker, and secondary switchgear distribution section, the main service is stepped down from a three-phase 4,160V delta to a 480/277V wye configuration.
Supplying standby power for the life safety and emergency branches will come from four Capstone 65kW natural gas microturbines, which will be discussed later in this document (Please see the attached electrical riser diagram for a more detailed organization of the electrical system).
The preliminary sizing for all equipment was based on a tabulation that can be found on page 25 of the supporting documents and also details of this equipment can be seen on pages 29-30.
As mentioned before, the unit substation will be located in the building’s main electrical room in the basement level.
Finally, each branch will be provided with a 480/277V lighting panel, transformer, and 208/120V double-tub receptacle panel in the main electrical room.
|Title:||Lighting And Electrical Systems Guide – ASCE Charles Pankow Foundation Architectural Engineering Student Competition|
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Could you please share the Short Circuit Calculation excel sheet, cable sizing excel sheet and load calculation sheet to my email address. I will be thankful to you.
Can I also get the excel sheet of the mentioned information on e-mail at [email protected]
Very nicely done, thank you for making this available. May I ask why no solar cells were included in the proposal?
Dear Edvard can you please send me the cable sizing calculation at [email protected]
link to download the guide for the school is not working. please advise
Hi … is it possible if we can get separate section for design, maintenance, operations, installation etc in technical articles or sitemap to easily navigate in relevant field. Moreover, is there any chat room or blog etc available to discuss any query ?
thanks for all your contribution, more we share more we grow our skill leveln, I appreciate your just feeling about the problems encountered by engineers, go ahead
I don’t know when I click the blue button I don’t see the page of donwload I see another page.
Take a look at the bottom, there is a link for download – ‘Right Here’.
I can not download this guide can someone sent to me at [email protected]
Why can’t download?
Could you please sent to [email protected]
I want learn how to design an electrical system. I need your assistance please.
Could you plz share the cable sizing excel sheet nd load calculation sheet as i want to know — if i am taking 3 runs of cable from one end to other end , then , why do fault level calculation for 1 run – fault current should also be done considering 3 runs …. In load calculation do we have to consider diversity factor for different panels nd then diversity factor for main panel .
This is how i do …
Your clarification plzz
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Guide sent! Enjoy!
Thanks for your contribution. I can’t open this guide , Can you please send the elementary school design guide as a PDF. I also try open your articles in past and wasn’t able to, please advise if there is another way to access it.
Thanks for more your concepts,
Please share the cable design Excel sheet