73Testing to determine whether equipment is energised

73 Testing to determine whether equipment is energised (1) Before electrical work is performed on electrical equipment, the person must do all that is reasonably practicable to ensure the electrical equipment is tested by a competent person to determine whether or not it is energised. (2) The person must do all that is reasonably practicable to ensure: (a) each exposed part is treated as energised until it is isolated and determined not to be energised; and (b) each high-voltage exposed part is earthed after being de-energised.