The Electrician Tools

Fast calculators, safety references, and on-site checklists built for electricians working to BS 7671.

Electrician Tools is a fast, on-site companion app built for electricians, apprentices, and electrical engineers.

It brings together essential calculators, safety references, and practical checklists in one clean, easy-to-use app — ideal for use on site or during design and inspection work.

Designed around UK electrical practice and BS 7671, Electrician Tools helps you work quicker, reduce mistakes, and double-check decisions with confidence.

FREE TOOLS & SAFETY REFERENCES • Safe Isolation Checklist • Cable Colours (Old & New) • IP Ratings Guide • RCD / RCBO Types Guide • Unit Converter (mm², AWG, m, ft) • Job Checklist / Kit List • Bathroom Zones • Safe Zones for Cables in Walls • Shock Effects on the Human Body • Current vs Time (Simple Shock Risk Chart) • Fire Zones & Fire Stopping Basics

POWERFUL CALCULATORS (PRO) • Voltage Drop (BS 7671 mV/A/m method) • Cable Sizing to meet % drop • R1 + R2 / Ze / Zs Calculator • Prospective Fault Current (PFC / PSCC / PEFC) • Ohm’s Law Calculator • Power, Power Factor & kVA • Maximum Demand (Diversity) • Circuit Designer (Design Current & Checks)

FULL REFERENCE LIBRARY (PRO) • Earthing Arrangements • Bonding Arrangements • Wiring Arrangements • Testing & Inspection • Safe Isolation Procedure • Cable Installation Methods

PRODUCTIVITY TOOLS (PRO) • Editable site notes per customer • Optional reminders with notifications • Ideal for follow-ups, return visits, and handover notes

BUILT FOR THE JOB • Clean, fast, on-site friendly interface • Designed for domestic & commercial work • Practical explanations in plain English • Ideal for electricians, trainees, inspectors & engineers

Important: All calculations and reference content are summaries. Always verify results against the latest regulations, manufacturer data, and site conditions. Upgrade to Pro to unlock the full calculator suite, reference library, and productivity tools.

Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/