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Cable Calculator

A cable size calculator based on BS 7671 for calculating cable sizes for a variety of different cable types and installation methods.

Electrical Apps for iPhone
Android Electrical Apps
PC Version

*The PC version may differ to the mobile version

cable calculator
  • Single and three phase
  • Radial and ring final circuits
  • Save or print the results
Cable Size Calculator

Carry out cable size calculations on the go.

Optimised for iPad, iPhone, Android Phones and Android Tablets

App Store
Play Store
Cable Calculator
Cable calculator based on BS 7671

Calculations

  • Step 1 – Enter the circuit parameters.

Carry out instant cable size calculations in two simple steps.

  1. Enter a circuit reference (optional).
  2. Enter a circuit description (optional).
  3. Select circuit arrangement (radial/ring).
  4. Select Single phase or three phase.
  5. Enter the design current.
  6. Enter the length of circuit.
  7. Enter the supply Uo voltage (Live-Earth voltage).
  8. Enter the supply Ze or Zdb value.
  9. Select the required maximum volt drop value.
  10. Select the earthing type.
  11. Select a protective device.
  12. Select the protective device rating.
  13. Select a cable type.
  14. Select the required maximum disconnection time.
  15. Next.

Cable Calculation – Step 2

  • Step 2 – Installation methods and correction factors.

The offered installation method options will depend on the selected cable type.

  1. Select an installation method.
  2. Select the ambient temperature (Ca).
  3. Select the number of cables grouped (Cg).
  4. Select the extent of cable that is covered by thermal insulation (Ci).
  5. Calculate.

The demo video may not reflect the current version of the app.

Demo video
cable calculation software
AI cable calculator
Hints and guides to specific regulations

Validations

Between each step a validation function runs and checks against various specific regulations which prompts you for options..

  • References various BS 7671 regulations.
  • Checks against specific regulation numbers.
  • Prompts with hints and guides.
Cable calculation report
Results Table

Cable Calculation – Results

A table of results is displayed for the cable calculation results which can also be printed or saved as a PDF file.

Print or save the calculation results

When you select to print or save the calculation results you are prompted to enter the following optional inputs which will be printed to the results file.

  • Sign the document with the on screen signature pad.
  • Enter your name.
  • Enter the client name.
  • Enter the installation address.

Screenshots

  • Cable Calculator
    Cable calculator based on BS 7671
  • swa calculator
    Cable Types
  • cable calculator UK
    Hints and Guides
  • Optional Signatory
  • Cable calculation report
    Results Table
  • What people think about this app…

    • Excellent

      Great fast calculating tool very accurate.
      dayo17
      iOS
    • Great App

      I personally have not had a problem with this app. It’s a really useful app for those who want to check cable requirements on the fly.
      DJ Edison
      iOS
    • Best cable calc

      Been using it for about a month now and it’s been brilliant Best cable calc I’ve found by far.
      Rob White
      Android
    • The Best

      By far the best I have used.
      Sam Watson
      Android

    Summary of Features

    • Single and three phase
    • Calculates circuit R1+R2
    • Calculates circuit Zs
    • Calculates circuit volt drop
    • Radial and ring final circuits
    • Hits and guides
    • Enter circuit number (optional)
    • Enter circuit description (optional)
    • Sign the document (optional)
    • Enter the installation address (optional)
    • Enter the client name (optional)
    • Save or print the results

    Cable calculation software based on BS 7671.

    Get the App

    Download the Cable Calculator app and start calculating cable sizes today.

    Electrical Apps for iPhone
    Android Electrical Apps
    PC Version

    *PC version may differ to the mobile version

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    Electrical software, apps and electrical certification software for the electrical industry.

    Info

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    Contact Us

    Dedicated Support Team
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    • info@pro-certs.com
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