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# Calculate Bus Bar Size and Voltage Drop (Spreadsheet)

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## Busbar voltage drop calculation

• Calculate Voltage Drop for  Bus Bar
• Select Size of Bus Bar for particular Load
 Software: Calculate Bus Bar Size and Voltage Drop Version: 22.8.2012 Developer: Jignesh Parmar Size: 56 Kb Price: Free Download: Right here | Video Courses | Membership | Download Updates

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1. Attah Edwin
Feb 24, 2021

Please, how do i select the correct size of a bursar for my feeder panel. I have a transformer rated 500KVA 11kv/0.45kv. I want to connect the low voltage side of the transformer to a feeder panel with three busbars for the three phases and one bursbar for the Neutral that feeds risers. i want to determine the size of busbar i can use in the panel

2. Abnir Icmat
Dec 14, 2020

Can you please send to me the calculation of bus bar riser voltage drop. Thanks for your quick response.

3. mohamedbesher
Mar 31, 2020

good exel sheet calculation

4. eyuel yilma
Feb 07, 2020

Dear sir,

i want calculations for w x h x d ( 80 x 10 x 1.5 ) mm thick copper bus bar. I want to learn how current capacity is decide based on cross section or dimensions or vise versa. please explain in detail. thanking of you.

5. eyuel yilma
Feb 07, 2020

Hi.
Can u pl explain to calculate current rating of bus bar. and pls share the formula.

6. Mobashar
Dec 11, 2019

we need excel sheet to calculate voltage drop in bus bar , kindly send me without protection. thanks,

7. lutfur rahman
Oct 24, 2019

this too cool

8. Deepak Narkhede
Mar 27, 2019

Dear sir,

i want calculations for w x h x d ( 100 x 25 x 1.5 ) mm thick copper busbar. I want to learn how current capacity is decide based on cross section or dimensions or vise versa. please explain in detail. thanking of you.

• VICTOR ROY
Jan 27, 2020

in case of copper bus bar the current carrying capacity is 1.2(max).
The bus bar 100mm x25mm x1.5mm is suitable for incomer current =(100*25*1.5*1.2)=4500A.
in case of aluminium bus bar the current carrying capacity is 0.8(max).
So, the bus bar 100x25x1.5 is suitable for =(100*25*1.5*0.8)=3000A incomer current.

• akhtar
Dec 06, 2022

i believe it is 1200amp per square inch

9. Shandukani Vhulondo
Apr 29, 2018

You need to determine the faul level of the systems and full load current from the customer to determine the CB rating. You can then calculate bus bar rating based on the total connected load supplied by the bus bar and rate you bus bar based on percentages of full load current of connected load. Bus Bar rating are standard sizes based in iEC and IEEE. You have 2500A, 2000A, 800A, 1500A, 600A, 250A, you size bus bar rating based on the three parameters – total connected load of the system, fault level of the system,

10. juan bautista
Jul 09, 2016

Do I have to subscribe to every download or technical article I need?
Thank you

11. DJINTHE
Jul 28, 2015

Bonjour Monsieur,

je n’arrive pas à télécharger les fichiers excel. pouvez vous m’aider? svp

12. sudhakar
Jul 24, 2015

Hi.
Can u pl explain hot to calculate current rating of bus bar. and pls share the formula.

13. Zeeshan
Feb 12, 2015

Please provide an example… unable to understand that how to use..??