- The body is a reasonably good conductor of electricity. Typical resistance from hand to foot is 500Ω so a considerable current can flow through the body from a high voltage source to earth
- Relatively small currents (50mA +) can disturb the electrical conduction system of the heart causing it to go into ventricular fibrillation, a fatal rhythm disturbance
- Remember it is current that kills – “It’s the volts that jolt and the mills that kill”