Approved Document P (electrical safety)

Calculators that use it

• Cable size calculator

  Example: Smallest size that passes: 6 mm² (indicative)

• EV charger load calculator

  Example: Needs load management or a DNO check (total 77.2 A on a 60 A fuse)

• Maximum demand and diversity calculator

  Example: Maximum demand: about 70.6 A after diversity (indicative)

• Voltage drop calculator

  Example: Voltage drop: 9.00 V (3.91%)

• Consumer unit and RCBO planner

  Example: 16 modules needed (indicative)

• Solar PV system size calculator

  Example: 10 panels, 4.30 kWp: about 3,655 kWh a year (indicative)

• Home battery size calculator

  Example: Battery: about 5.33 kWh nominal (4.80 kWh usable)