Electrical shock from an outlet ranges from a brief, harmless sensation to a life-threatening injury depending on the current path, duration, and voltage. Even a shock that feels minor requires assessment — the internal effects of electrical current are not always visible or immediately felt.
Any shock that passed through the torso, caused muscle contraction, produced burns at the entry or exit point, or resulted in any loss of awareness requires emergency medical evaluation. Electrical current passing through the chest can disrupt heart rhythm even when the external injury appears minor. Inform emergency personnel that the injury was caused by household current (120V) and describe the approximate duration of contact.
An outlet that delivers a shock has a wiring fault — normal outlets do not shock users unless a fault condition exists. Common causes include a reversed hot and neutral wire, a loose connection creating a voltage difference on the outlet face, a missing ground, or a damaged device that is back-feeding voltage to the plug. EZSMART diagnoses and repairs faulty outlets across Ontario. Do not use the outlet again until it has been inspected and repaired by a licensed electrician.
Electrician Since 2008 Journeyman Electrician Designated Master Electrician at EZSMART Corp