Objective: To determine whether cardiac monitoring is required in children sustaining electric shock at Australian household voltage. Methodology: Records of patients admitted via the Emergency Department of Princess Margaret Hospital for Children, Perth, Australia, for the period 1968-96 were retrospectively reviewed. The initial ECG findings of patients with an electric shock were recorded, and the development of any arrhythmia. Results: Forty-four patients were identified, 40 of whom had sustained a household electrical injury. One patient had an abnormal ECG on admission, none developed an arrhythmia and all survived. Conclusions: Routine cardiac monitoring is not required after exposure to Australian household electricity supply if the child is asymptomatic and has a normal ECG on presentation.