Premium Membership โ™•

Save 50% on all EEP Academy courses with Enterprise Membership Plan and study specialized LV/MV/HV technical articles & guides.

Home / Download Center / Electrical Software Reviews / E-Feeder and Cable Calculator


Items in red color must be provided. Items in blue color are calculated. The top half of the calculator is for line voltage conductors while the bottom half is for low voltage and fiber optic cables. If you are doing line voltage, enter the total number of conductors of this size and insulation starting in cell B4.

In cell C4, choose the conductor size from the drop down list.

AWG sizes are shown as the number such as “12”, “4”, or “3/0”. Kcmil or MCM are shown as the number such as “250”, “500”, or “750”. Wire sizes must be between #14 AWG and 1000 Kcmil.

If you are doing low voltage or fiber optics, enter the total number of cables of this type starting in cell B11. In cell C11, choose the cable type from the drop down list. Only a certain number of cable types are listed. Low voltage cables are in the format of (AWG)/(# of conductors). Their sizes are based on some typical industry sizes for stranded multi-conductor cables with shielding and a PVC jacket. Fiber optic cables are in shown as the number of fiber strands followed by an “f”. Their sizes are based on Beldon riser or plenum series – whichever was larger for that number of fibers.

You may wish to replace the values in the tables with areas of cabling you work with the most. Keep in mind that NEC 800.110 Exception states that conduit fill rules don’t apply to communications wiring. Use this calculator as a general guide only.

Finally, choose the conduit type from the drop down list. An explanation of the acronyms is listed to the right of the calculation box. If “N/A” appears in the Minimum Conduit Size in calculated cell E15, that means that that type of conduit is not manufactured large enough to legally contain the set of conductors that you have designated.

The figures in the tables were taken from the tables found in the 2002 NEC.

Software:E-Feeder and Cable Calculator
Developer:Design & Construction Engineers ([email protected])
Size:67 kB
Download:Here ๐Ÿ”— (Get Premium Membership) | Video Courses | Download Updates

E-Feeder and Cable Calculator

Premium Membership

Get access to premium HV/MV/LV technical articles, advanced electrical engineering guides, papers, and much more! It will help you to shape up your technical skills in your everyday life as an electrical engineer.
50% Discount ๐Ÿ’ฅ - Save 50% on all 90+ video courses with Enterprise Membership plan.

More Information


  1. bd
    Jun 26, 2023


  2. Marcelo
    May 14, 2022

    Please help, i cant dowload the file

  3. Fher
    May 05, 2018

    I think the subject for E-Feeder and Cable Calculator is not right, the subject should be “conduit size calculator”


  4. sufiyan vohra
    Dec 20, 2014

    I like that site

Leave a Comment

Tell us what you're thinking. We care about your opinion! Please keep in mind that comments are moderated and rel="nofollow" is in use. So, please do not use a spammy keyword or a domain as your name, or it will be deleted. Let's have a professional and meaningful conversation instead. Thanks for dropping by!

eight  ×    =  16

Learn How to Design Power Systems

Learn to design LV/MV/HV power systems through professional video courses. Lifetime access. Enjoy learning!

Subscribe to Weekly Newsletter

Subscribe to our Weekly Digest newsletter and receive free updates on new technical articles, video courses and guides (PDF).
EEP Academy Courses - A hand crafted cutting-edge electrical engineering knowledge