myElectrical - Cable Sizing Tool Upgrade 

By on December 1st, 2011

Our IEE cable sizing was wrote a few years ago and had become rough around the edges.  I thought it was time to give the tool a service.  Unfortunately when I looked under the hood I found cracked cylinders, broken bell ends and worn cylinders.  Rather than a quick service I had no choice be to do a major rewrite on the software.  The only thing I didn't touch is the chassis [database], which while suffering from patches of rust, was still usable.

In rewriting the software good things have happened.  There has been a large increase in performance [no more very long waits, with frequent postbacks] and I have put in a couple of enhancements.  The main things users will notice are:

 

  • things should be a lot quicker.  The number of postbacks has been minimized (unfortunately a few are required to retrieve cable configuration data).  Calculation of the cable size itself has been improved to make the processing more efficient.
  • everything is all on one page.  A slicker user interface with no more switching between tabs.
  • you now have quick access to the underlying data.  Click any of the  'i' buttons on the form and the relevant data table should pop up.

Of all the software tools on the site, the cable sizing one is the most complex.  A lot of the complexity derives from strictly following the Wiring Regulations, which while designed for humans to work through, are not necessarily software friendly.  Hopefully the tool should be working well, but if you do come across and bugs or have any suggestions, please let me know.

Click here to  give the Cable Sizing Tool a try.



Steven McFadyen's avatar Steven McFadyen

Steven has over twenty five years experience working on some of the largest construction projects. He has a deep technical understanding of electrical engineering and is keen to share this knowledge. About the author


comments powered by Disqus

  1. skalooba76's avatar skalooba76 says:
    12/7/2011 4:49 AM

    hi,

    i noticed when i try to size cable for small load, the software keep giving the wrong size, i.e for 12 Amp load, 380V, protected by 16 Amp, the cable calculation software will give 35mm2 which is wrong.

    please look into this matter

    thanks for all the help

    niki

    • Steven's avatar Steven says:
      12/7/2011 5:25 AM

      It may be the fault level. In calculating the size the following happens:

      Cable is calculated on current capacity
      Voltage drop is calculated (and cable size increased if necessary)
      Fault level withstand is calculated (and cable size increased if necessary)

      I have just tried your scenario (with XLPE cable) and at 25kA fault, 25m2 was required, but at 1kA fault only 1mm2.


Comments are closed for this post:
  • have a question or need help, please use our Questions Section
  • spotted an error or have additional info that you think should be in this post, feel free to Contact Us



Latest Questions:

  1. help for electricity distribution (HTA) through underground cables (6 circuits)
  2. CT Secondary Rating
  3. Embedded system design
  4. PV system design - advice
  5. Power consumption of motor during starting
  6. Inspection of Cathodic Protection Transformer Rectifier
  7. Per Unit & Faults
  8. relay testing

most popular notesMost Popular Notes:







newsletter logo

Our Newsletter

Receive updates on new posts by email
down arrow

Solar Electricity Handbook - 2015 Edition: A simple, practical guide to solar energy - designing and installing solar PV systems.
Solar Electricity Handbook - 2015 Edition: ...
Michael Boxwell
Paperback - 204 pages
$17.09
The Ultimate Solar Power Design Guide: Less Theory More Practice (The Missing Guide For Proven Simple Fast Sizing Of Solar Electricity Systems For Your Home or Business)
The Ultimate Solar Power Design Guide: Less ...
Lacho Pop MSE, Dimi ...
Kindle Edition - 210 pages
Electric Power Distribution Engineering, Third Edition
Electric Power Distribution Engineering, ...
Turan Gonen
Hardcover - 1061 pages
$141.07
Do It Yourself 12 Volt Solar Power, 2nd Edition (Simple Living)
Do It Yourself 12 Volt Solar Power, 2nd ...
Michael Daniek
Paperback - 128 pages
$10.29
Power System Relaying
Power System Relaying
Stanley H. Horowitz, ...
Hardcover - 398 pages
$122.30
Photovoltaic Systems Engineering, Third Edition
Photovoltaic Systems Engineering, Third ...
Roger A. Messenger, ...
Hardcover - 528 pages
$101.53
Independent Energy Guide: Electrical Power for Home, Boat, & RV
Independent Energy Guide: Electrical Power ...
Kevin Jeffrey
Paperback - 280 pages
Renewable and Efficient Electric Power Systems
Renewable and Efficient Electric Power ...
Gilbert M. Masters
Hardcover - 712 pages
$99.71
Large-Scale Solar Power Systems: Construction and Economics (Sustainability Science and Engineering)
Large-Scale Solar Power Systems: ...
Dr Peter Gevorkian
Paperback - 400 pages
$49.99
Energy Systems Engineering: Evaluation and Implementation, Second Edition
Energy Systems Engineering: Evaluation and ...
Francis Vanek, Louis ...
Hardcover - 672 pages
$60.99
Power System Relaying
Power System Relaying
Stanley H. Horowitz, ...
Hardcover - 398 pages
$122.30
Design of Smart Power Grid Renewable Energy Systems
Design of Smart Power Grid Renewable Energy ...
Ali Keyhani
Hardcover - 592 pages
$113.11
Photovoltaics: Design and Installation Manual
Photovoltaics: Design and Installation ...
Solar Energy ...
Paperback - 336 pages
$33.79
How to Solar Power Your Home Everything You Need to Know Explained Simply (Back-To-Basics Conserving)
How to Solar Power Your Home Everything You ...
Martha Maeda
Paperback - 336 pages
$12.28
Submarine Power Cables: Design, Installation, Repair, Environmental Aspects (Power Systems)
Submarine Power Cables: Design, ...
Thomas Worzyk
Hardcover - 296 pages
$189.00
Electric Power Substations Engineering, Third Edition (Electrical Engineering Handbook)
Electric Power Substations Engineering, ...
Hardcover - 536 pages
$131.04
Solar PV Engineering and Installation: Preparation for the NABCEP PV Installation Professional Certification
Solar PV Engineering and Installation: ...
Sean White
Paperback - 248 pages
$32.65
Large-Scale Solar Power System Design (GreenSource Books): An Engineering Guide for Grid-Connected Solar Power Generation (McGraw-Hill's Greensource)
Large-Scale Solar Power System Design ...
Peter Gevorkian
Hardcover - 704 pages
$97.83
Smart Power Grids 2011 (Power Systems)
Smart Power Grids 2011 (Power Systems)
Paperback - 696 pages
$299.00
Power System Monitoring and Control
Power System Monitoring and Control
Hassan Bevrani, ...
Hardcover - 288 pages
$115.00
Power Electronics and Renewable Energy Systems: Proceedings of ICPERES 2014 (Lecture Notes in Electrical Engineering)
Power Electronics and Renewable Energy ...
Hardcover - 1607 pages
$211.07
Solar Photovoltaic Basics: A Study Guide for the NABCEP Entry Level Exam
Solar Photovoltaic Basics: A Study Guide ...
Sean White
Paperback - 168 pages
$32.25
Power Generation Handbook 2/E
Power Generation Handbook 2/E
Philip Kiameh
Kindle Edition - 736 pages
Convex Optimization of Power Systems
Convex Optimization of Power Systems
Joshua Adam Taylor
Hardcover - 209 pages
$76.97
Power Generation and the Environment
Power Generation and the Environment
Anco S. Blazev
Hardcover - 1333 pages
$191.18
Power Electronics for Modern Wind Turbines (Synthesis Lectures on Power Electronics)
Power Electronics for Modern Wind Turbines ...
Frede Blaabjerg, Zhe ...
Paperback - 120 pages
$35.00
Renewable Energy Integration: Practical Management of Variability, Uncertainty, and Flexibility in Power Grids
Renewable Energy Integration: Practical ...
Lawrence E. Jones
Hardcover - 474 pages
$95.50
Photovoltaic Design and Installation For Dummies
Photovoltaic Design and Installation For ...
Ryan Mayfield
Paperback - 384 pages
$15.46
Energy Systems Engineering: Evaluation and Implementation
Energy Systems Engineering: Evaluation and ...
Francis Vanek, Louis ...
Hardcover - 532 pages


Have some knowledge to share

If you have some expert knowledge or experience, why not consider sharing this with our community.  

By writing an electrical note, you will be educating our users and at the same time promoting your expertise within the engineering community.

To get started and understand our policy, you can read our How to Write an Electrical Note