Nerve damage and death are likely to occur if the body receives a current of<u> 1000</u> to<u> 4300</u> milliamps.
A heart attack occurs at 4 amps. This means that the heart is not beating at all. Tissues are burned with currents in excess of 5 amperes. This table shows what typically happens for a range of currents for 1 second at common household voltages. If it is safe to do so, turn off the power.
If this is unsafe use a non-conductive object made of wood cardboard or plastic to remove the source. After removing the power supply check the person's pulse to determine if they are breathing. Boosters are what stop your heart and kill you. A current of as little as 100 mA can be lethal. A 480-volt circuit is perfectly capable of delivering well over 100mA of current. It may survive contact with the 480 but is not recommended.
