Set Appliance State:

Mains Power Off
Set Multimeter to AC Voltage Set meter to measure AC Volts
Use Insulation Mat as required
ON/OFF Switch in ON Position
WARNING! Mains voltage is expected during test, follow TOPs P4 live testing procedure
Mains Power On

Measurement:

Measure Voltage across terminal marked 3 and terminal marked N on the Main Switchboard terminal strip.