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CableCalc BS7671 - 18th Edition

CableCalc BS7671 Laptop

CableCalc BS7671 is a cable evaluation application fully compliant with BS7671:2018 Requirements for Electrical Installations IEE Wiring Regulations 18th Edition based on IEC/CENELEC Standards.

Following on from the success of previous releases of CableCalc BS7671 over the past 20 years, CableCalc BS7671 provides an intuitive user interface with a host of exciting features.

CableCalc BS7671 will calculate and check for voltage drop, disconnection time, fault current, earth fault data, overload and short circuit data in five easy steps producing detailed print-outs for each calculation.

CableCalc BS7671 is available to purchase in four levels, depending on your needs. All Levels of CableCalc BS7671 will perform both single and three-phase calculations. The phase colours default as Brown Black and Grey with Blue for Neutral, but may be customised to any set of colours.

Click a wire below to find out more....

CableCalc BS7671 - Level 1 ⇠

CableCalc Level 1
CableCalc Level 1

For the electrician or engineer who requires quick calculations to the requirements of BS7671. Create detailed design schedules which can be easily printed on to paper. CableCalc Level 1 will calculate single and three phase calculations for radial and ring main circuits with the results output to a detailed calculation printout.

CableCalc Level 1 includes a full database of copper cables and generic protective devices and allows you to complete all applicable information sorted into six sections:

  1. Supply Details - Source information, circuit type, load and distance
  2. Cable Selection - Cable type, size and installation method
  3. Correction Factors - Grouping factors, temperature correction, thermal insulation and any cable tray or ladder configuration
  4. Protective Device - Type and rating of the device protecting the circuit
  5. CPC - Details of any cable sheath or armouring, internal cores and any separate cables or conduit/trunking
  6. Time - Device disconnection time graph
CableCalc BS7671 Level 1 Screenshot

Generic Protective Devices included:

  • Miniature Circuit Breakers (MCB) to BS EN 60898 types B, C & D to 125A, Older BS 3871 types 1, 2, 3, & 4 to 125A
  • Moulded Case Circuit Breakers (MCCB) to BS EN 60947, 20A to 1600A, adjustable for Magnetic (multiplier) & Thermal settings
  • Air Circuit Breakers (ACB) to BS EN 60947, 400A to 6300A, adjustable for Magnetic (multiplier) & Thermal settings
  • Residual Current Devices (RCD) to BS EN 61008, 10mA, 30mA, 100mA, 300mA, 6A to 100A
  • Residual Current Circuit Breakers (RCBO) to BS EN 61009, 10mA, 30mA, 100mA, 300mA, 6A to 100A
  • BS 88 HRC cartridge fuses, 2A to 800A
  • BS 1361 HRC cartridge fuses, 5A to 100A
  • BS 1362 plug fuses, 1A to 13A

CableCalc BS7671 - Level 2 ⇠

CableCalc Level 2
CableCalc Level 2

For the contractor or engineer who requires detailed calculation results and schedules which can be printed or exported as Adobe PDF files for electronic distribution. This version supports up to five distribution boards and includes all the features found in Level 1.

Features of Level 2 include:

  1. Project design up to 5 Distribution Boards including the supply
  2. Sub Main calculations
  3. Domestic and Street Lighting circuit calculations
  4. DOL Motor circuits
  5. Star Delta Motor circuits
  6. Circuit details and Design schedules
  7. CableCalc Utilities

Discrimination checks may be performed which will highlight any anomalies instantly.

The lighting calculation facility is especially useful for calculations involving cables ‘daisy chained’ or looped together, as in street lighting installations or sub main distribution.

Create detailed design schedules that may be in the Adobe PDF format (Portable Document Format) which can be easily Saved to disk, Printed on to paper or emailed straight to your clients.

CableCalc BS7671 - Level 2 will allow you to design complete electrical installation single-phase or three-phase projects, each with up to five distribution boards

CableCalc BS7671 - Level 3 ⇠

CableCalc Level 3
CableCalc Level 3

For the designer or consultant who requires high quality designs and schedules. This version includes all of the features of levels 1 & 2, and in addition will produce up to 20 distribution boards and includes manufacturer-specific protective device data and single line project layout diagrams.

CableCalc BS7671 - Level 3 is a software design tool for producing detailed diagrams, schedules, schematic drawings for a complete cable installation. CableCalc BS7671 - Level 3 is a very efficient design tool which will calculate all of the sub-circuits and feeder cables for multiple distribution board projects at the click of a button.

CableCalc BS7671 - Level 3 can produce high quality detailed schematic diagrams in the Adobe PDF format (Portable Document Format) which can be easily saved to disk, printed on to paper or emailed straight to your clients.

CableCalc BS7671 - Level 3 Schedules

CableCalc BS7671 - Level 4 ⇠

CableCalc Level 4
CableCalc Level 4

CableCalc BS7671 - Level 4

The top Level of CableCalc BS7671, for the professional designer/consultant who requires high quality designs and schedules. This version includes all of the features of levels 1, 2 & 3, and in addition will produce an unlimited number of distribution boards and includes manufacturer-specific protective device data

CableCalc BS7671 - Level 4 is a software design tool for producing detailed diagrams, schedules, schematic drawings for a complete cable installation. CableCalc BS7671 - Level 4 is a very efficient design tool, allowing an unlimited number of distribution boards to be used in any project. CableCalc BS7671 - Level 4 will calculate all of the sub-circuits and feeder cables for multiple distribution board projects at the click of a button.

Level 4 can produce high quality detailed distribution board diagrams in the Adobe PDF format (Portable Document Format) which can be easily saved to disk, printed on to paper or emailed straight to your clients.

CableCalc Level Comparison Chart

Detailed calculation print out
Adiabatic CPC size calculations
Single-phase calculations
Device time/current graphs
CableCalc Level 1
PVC Twin and Earth Cables
Ring Circuit Calculations
Radial Circuit calculations
Three-phase calculations
Full range of cables including:
CableCalc Level 1
PVC, XLPE & LSF
FP Fire resistant cables
Flex & Tri-rated cables
MICC, Rubber and more
Lighting Circuit calculations
CableCalc Level 2
Sub main circuit calculations
star delta motor calculations
DOL Motor calculations
Project Design up to 5 DBs
CableCalc Level 3
Circuit Details Print-out
CableCalc Level 2
Design schedule print-outs
Export print-out as PDF
CableCalc Level 4
Device discrimination graphs
Single line diagrams
CableCalc Level 3
Manufacturer protective devices
Up to 20 distribution boards
User defined protective devices
CableCalc Level 4
DB schematic diagrams
Distribution board diagrams
Aluminium Cables
Unlimited distribution boards
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CableCalc BS7671 - for iPad

CableCalc BS7671 for iPad

CableCalc BS7671 for iPad is an app that includes nearly all of the features of CableCalc BS7671 Level 1, meaning that you can carry out single and three phase cable calculations on-site using an iPad.

Calculate and check for voltage drop, disconnection time, fault current, earth fault data, overload and short circuit data and will produce a detailed print-out for each calculation in PDF format which can be printed to an AirPort compatible printer or emailed.

Perform both single and three-phase calculations for radial, ring and sub main circuits.

CableCalc for iPad includes a full database of copper cables and generic protective devices and allows you to complete all information relevant to the calculation including any applicable correction factors for temperature, grouping etc. Energy let through values can be entered and calculations can be saved to load back in later.

The following cable types are included:

  • 70°C PVC Armoured & non-armoured multi-core & singles, twin & earth, 6491x & 6181y Singles
  • 90°C LSF Armoured singles & multi-core, 6491b & 6181 Singles, Twin & earth, Flat 3 core & earth
  • 90°C XLPE Armoured & Non Armoured singles & Multi-core, 6491b & 6181xy singles
  • FP100, FP200, FP200 Flex, FP400 and Fireforce PH30 Fire rated
  • MICC PVC Sheath/Bare, Heavy & Light Duty
  • CY, SY, YY 70°C PVC Flexible cable, 105°C Tri-Rated singles
  • 60 & 90°C Rubber insulated flexible cable
Download on the App Store

Buy CableCalc BS7671

Alternatively, buy CableCalc as part of an Annual Licence Package

  • CableCalc Level 1 (Windows) - £199.00
  • CableCalc Level 2 (Windows) - £295.00
  • CableCalc Level 3 (Windows) - £695.00
  • CableCalc Level 4 (Windows) - £1995.00
Mac OS
  • CableCalc Level 1 (Mac OS) - £199.00
  • CableCalc Level 2 (Mac OS) - £295.00
  • CableCalc Level 3 (Mac OS) - £695.00
  • CableCalc Level 4 (Mac OS) - £1995.00
  • For MacOSX 10.7 (Lion) and later
Download on the App Store
  • CableCalc for iPad - £149.99
  • CableCalc Lite for iPhone/iPad - £FREE

All prices are exclusive of VAT

Try CableCalc BS7671 free of charge for 14 days