Electrical Safety

When a Transformer Surface Can Become an Electric-Shock Hazard

A transformer can have exposed metal around its core, frame, mounting hardware, or enclosure while carrying hazardous voltage on its windings. Those metal parts are not automatically live simply because the transformer is energized. Whether touching them can produce an electric shock depends on the transformer’s construction, insulation condition, protective earthing, and the electrical path between the person and the circuit. The important distinction is between a conductor intended to carry voltage and an accessible conductive part that should remain separated from it.