Ohms Law Calculator for iPhone & iPad

Ohms Law Calculator for iPhone & iPad

Watts Amps Volts Calculator for iPhone and iPad is based on ohms law with single and three phase calculations.



free iphone apps for electricians

Best free iPhone Apps

Best free iPhone apps

Best free iPhone apps from pro certs software directly in the itunes app store.

best free iphone apps

Click here for the best free iPhone apps

Also check below for our current best free iPhone apps by pro certs software




Max Zs Values App for iPhone & iPad

Max Zs Values App for iPhone & iPad

IPhone Max Zs Values AppView in App StoreCalculate the maximum permitted Zs values (earth loop impedance) as per BS7671.

Using the picker wheel select the protective device (fuse’s, MCB’s, RCBO’s) and device rating to calculate the maximum permitted Zs value for your selected device.


  • + BS7671 Amendment 1 2011 values
  • + BS EN device’s
  • + Fuse’s
  • + MCB’s
  • + RCBO’s
  • + 100% values
  • + 80% values
  • + 0.4 second disconnection times
  • + 0.2 second disconnection times
  • + 5 second disconnection times


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