Selection of main and branch circuit breakers
Spreadsheet calculates the following:
- Size and type of main MCCB, RCCB and ELCB for continuous and non-continuous load
- Sensitivity of MCCB, RCCB and ELCB
- Size of cable
- Size and type of sub-circuit MCCB and MCB for continious and non-continious load
- Total load
- Main and branch circuit current.
| Software: | Selection of MCCB, ELCB for main-branch circuit – MS Excel Spreadsheet |
| Version: | 22.8.2012  |
| Developer: | Jignesh Parmar |
| Size: | 147 Kb |
| Price: | Free |
| Download: | Right here | Video Courses | Membership | Download Updates |
Thank you for your share
Thanks for your Sheets
Hello
I would like to know how the cable selection works because, for example, for a motor load current of 180.4 Amp, and selecting a 2.5 mm2 cable in the drop-down cell, it is indicated that this cable size is OK (green color ) with a maximum length of 8 meters
it is impossible that this size of cable can support this load
For all the above, I would like to know if I am misusing this spreadsheet
Best regards, thank you in advance and I look forward to your response.
Spreadsheet is not working.Help.
Working, full all information for corresponding fields
Dear Sir,
Your programs are useful unless we can fully understand the actual derivations i.e the formulae in the respective cells. However, most of your formulae in the respective cells are locked with password. Thus, rendered your program ineffective. This is the main reason
for the many complaints from your readers.
1. Could you let me know how do I unlock your passwords
2. If there is any cost involved, please let me know:
a) The process
b) The cost
c) What are my other benefits
d) What are the eligible duration
Looking forward to receive your quick response.
Regards,
(Mr. Gan Saik Ngai)
Im a Electrical Engineer.I found your site very helpfull and has very useful contents.
DEAR SIR,
CAN YOU PLEASE SUGGEST A BOOK WHEREIN I CAN GET ALL THE IMPORTANT FORMULAE FOR ELECTRICAL ENGINEERING DESIGN CALCULATIONS READY HAND FOR PROJECT ENGINEERING RELATED TO ELECTRICAL SYSTEM DESIGN.
I AM A BE ELECTRICAL ENGINEER PRESENTLY RETIRED AGED 67 YEARS HAVING PUT UP AN INDUSTRIAL EXPERIENCE IN PROJECTS FOR 38 YEARS.
THANKS.
PARTHA
Thanks a lot for your sharing.
Very Nice.
How to increase the wire size?
It is a very good tool for the development of electrical circuits.
Please send me you application.
Thanks.
Im a Electrical Engineer.I found your site very helpfull and has very useful contents.
1. You should not include FUR (Future) load when sizing Over Current Protection Device (OCPD) for a specific load. The size of the OCPD should Be to protect the current load, otherwise the OCPD is NOT protected.
2. the NEC FLA of motor loads are HP driven and not KVA driven. Also the circuit trip amps can be up to 250% of the FLA. see NEC Table 430-250
Hi Jignesh,
I am working in a project where there are 12 nos. LV (415V) motors fed from MCC located about 1.1kM away from the motors. There are LCS located near the motors.understand from another project that in such long distance cases, when a stop signal is given from LCS, the contactor remains picked up due to the stored energy due to cable capacitance. Kindly advise some mitigation measures in this kind of situation to avoid mal-operation.
Regards
Debmalya
Really its very excellent and good explanation.
useless … the spreadsheet is not working ….
hi.pleaze pass???
Hi, How I can get a password for datasheets?
I don’t understand some symbol in calculator spreadsheet. Would you like to send me a table for these symbol. I hope your reply soon.
Thanks and best regards.
Sir,
The Selection of MCCB spreadsheet I can not select more than 120 sq mm cable size , so please update this sheet for other size of cable
The excel file shown above is not calculating well for cable selection , i make test for 3 phase load with current 474 A , and i set cable size 10 mm^2 and excel sheet still give that cable design is O.K. ??!!!!
pleas how to open XLS file ,iam try do not open
may I have the password?
can i have the password plz? ty
tripping amp rating is wrong no decimal point ..
overall good work..
Sir, trying to work with the XL, can’t access, it’s pass word protected,
can i have the password
Hi,
I have downloaded this excel worksheet but I cannot access to it as it is being protected by a password can I have the password so I can start to use this excel work sheet?
Thank Ad very much!
Thanks alot
How to download this file
I down loaded the XL on MCCB selection but could not use as the message comes that it is write protected
Thanks a lots. Excellent !!!
For tension free live and Stres free life pl learn Rajayoga-meditation.
My dear brothers and Sisters, this is God message to all of u,
Pl see http://www.brahmakumaris.com where God/Shiva Paramata/Our father/ Father of Jesus/Almight authority/Supreme soul is teaching rajayoga (mediation), give real peace, real happy and ever young. Shiva paramata, is going to establish a purity/diety world for us. Co-operate with our father-lord shiva to establish a new diety world for us, for our childrens etc,., Now or Never… no god no peace…. Know god and know peace. Pl do not neglect this message.. Please co-operative with god lord shiva paramata and give u r internet technolozy for establishment of better world tomorrow.
Thank
U r well wisher.
God’s messanger
I agree, excellent explanation.
tnx , they are very useful