Online Electrical Software
Web based Online Electrical Calculators & Reference Software based on BS 7671 wiring regulations. Utilities | Tools | Calculators | Tables.
Trusted by UK Electrical Contractors and Electricians.
Stop manually calculating Max Zs, Adiabatic, Cable Sizes and Max Demand.
Get instant, error-free results for every job right from your desktop.
Optimised for desktop PC’s and laptops.
Electrical Calculators
The electrical calculators include (but not limited to),
Electrical Tables
The electrical reference tables include (but not limited to),
Easy to follow navigation
Designed with the user in mind there are a number of easy access menus along with a searchable index.
The home screen quick access icons link to the most commonly used electrical calculators.
Maximum Demand Calculator
Add your circuits (loads) and apply diversity to calculate the maximum demand.
Cable Size Calculator
Calculate the minimum required cable size for a variety of different cable types, installation methods and correction factors.
Earthing & Bonding Calculators
The earthing and bonding section includes calculators and tables for the sizing of circuit protective conductors, earthing conductors and main protective bonding conductors (protective equipotential bonding) such as for Gas and Water incoming services.
Adiabatic Equation Calculator
Calculate the minimum required earth or cpc size for a variety of different cable types and materials.
Maximum Zs Values
A calculator to calculate common protective devices maximum Zs (earth fault loop impedance) values.
Also includes many manufacture Zs tables for MCCBs and ACBs.
Software Demo Video
Version 1.0.6
Summary of Features
Key Benefits
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Eliminate Compliance Errors ⚡️ |
Max Zs Values: Check measured Zs against 80% temperature-adjusted figures instantly. |
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Adiabatic Equation Calculator: Quickly size protective conductors (CPC/Earth). | |
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Design with Confidence 📐 |
Cable Sizing: Includes correction factors and multiple installation methods. |
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Maximum Demand Calculator: Apply diversity factors for single and three-phase circuits based on the On-Site Guide. | |
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Digital Reference Library 📚 |
18th Edition Tables: Access Bathroom IP ratings, cable ratings, and wiring zones without leaving the software. |
+ much more…
Web Electrical Software Pricing
Sign-up today and get full instant access to this popular online electrical software
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Fast, Accurate & Precision Electrical Calculations, Start Calculating Today, Choose Your Plan & Get Instant Access
Single User
Single-user 6 months.
Single (6m)
- Cable Calc.
- Max Zs Values.
- Maximum Demand Calculator.
- Tables and charts.
- And so much more…
£ 55
Cancel Anytime
Best Value
Single User
Single-user 12 months.
Single (12m)
- Cable Calc.
- Max Zs Values.
- Maximum Demand Calculator.
- Tables and charts.
- And so much more…
£ 75
Cancel Anytime
Multi User
Multi-user 12 months.
Enterprise (12m)
- As per the single-user plus
- Includes 3 users.
- Additional users only £55/year.
- Dedicated support team.
- Cancel anytime.
£ 165
Includes 3 users
Cancel Anytime