The app for Electricians, includes electrical calculators, charts, tables tools and guides for Electricians.

The Electrician's app for electricians, electrical engineers and anyone working within the electrical industry. This Electrical Tools and Reference App is packed full of printable electrical charts & tables, multiple electrical calculators, electrical tools and guides.

Electrical Tools and Reference is a great addition to your toolkit enabling the instant lookup of cable rating charts, EICR next inspection (frequency of inspections) charts or to look up a Zs value or carry out a quick volt drop calculation.

This electrical app is full of charts, tables calculators and electrical tools and electrical formulator calculators designed to assist with the day to day requirements of electricians.

- Direct call to the local DNO
- Easy to navigate sidebar menu
- Print electrical charts
- Print MCCB max Zs tables
- Save and print your own notes
- Regularly maintained
- Dedicated support team

Watts amps volts calculator:
- Single phase convert to or from Watts, Volts & Amps
- Three phase convert to or from kW, volts, amps &
power factor

kVA calculator:
- Single phase convert to or from kVA, volts, & amps
- Three phase convert to or from kVA, volts, & amps
- kVA-PF-kW calculate to or from kVA, power factor &

Max Zs Values (18th Edition):
- Common BS EN devices
- Some 60947-2 MCCB manufacture Zs value charts
- RCD's in TT earthing systems max Zs values
- Max REC Ze values
- Uo 55v (110V) single & three phase 63.5v Zs values
- Calculate to or from Ze + R1+R2 = Zs

Earthing & Bonding:
- Main earthing & bonding size calculator
- Circuit cpc (earth) size calculator
- Adiabatic Equation

Other Electrical Calculators:
- Ring final circuits r1+r2 to R1+R2 converter
- PFC fault current calculator
- Cable size calculator
- Volt drop calculator
- Line conductor to cpc ratio calculator
- Calculates the expected ring circuit r2+r2 from the
r1+r1 value
+ Many more...

Printable charts and tables.
- Bathroom zones
- IP ratings of equipment in bathrooms
- Cable rating charts
- Cable resistance per meter chart
- CPC ratio chart for ring final circuits
- EICR frequency of inspections
- IP codes and the level of protection offered for each
code chart

RCD trip times charts:
- BS EN 61008-1 & 61009.-1
- BS 4293 & 7288

SPD surge protection charts:
- SPD types and their applications

- SWA steel armour copper equivalent size chart
- SWA cleat selection chart
- SWA gland selection chart
- Safe wiring zones
- Types of wiring (wiring codes for electrical
- Cable installation method codes (for electrical
- BS 5308 part 1 + 2 and ENATS 09-06 cable colour codes
- RJ45 connection guide colour codes
- Telephone point connection guide colour codes
- Harmonised wiring colours table (old to new)
+ Many more...

Electrical software for the electrical installer, maintenance engineer, installation electrician or electrical testing & inspection engineer.

You may also like our Electrical Certification Software "Pro Certs" for iPad.

Contact our dedicated support team at to offer improvement suggestions or request new features.

Check out our full collection of electrical apps in the app store or at

What’s New

Version 10.42.9

News feed update.

Ratings and Reviews

1.0 out of 5
1 Rating

1 Rating

App Privacy

The developer, Pro Certs Software Ltd, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

More By This Developer


You Might Also Like