Convert kVA, Amps, Volts, kW and Power Factor. Single & three phase calculations
Pre-amendment 3 version, useful for looking up old Zs values before amendment 3.
Calculate your power factor and see how much you could save on your energy bills
Calculate the maximum Zs values for MCB's and fuses to BS 7671 Amendment 3 2015.
Calculates main earth, bonding and cpc sizes, includes the Adiabatic Equation.