| Current mA | Symptom |
| 1 or less | Causes no sensation - not felt |
| 1 to 8 | Sensation
of shock, not painful, individual can let go at will, as muscular control is not lost |
| 8 to 15 | Painful
shock, individual can let go at will, as muscular control is not lost |
| 15 to 20 | Painful
shock, muscular control of adjacent muscles lost, cannot let go |
| 20 to 50 | Painful,
severe muscular contractions, breathing difficult |
| 50 to 100 (Possible) 100 to 200 (Certain) |
Ventricular
fibrillation (a heart condition that may result in death) |
| 200 and over | Severe
burns, severe muscular contractions that are so severe that chest muscles clamp the heart and stop it for the duration of the shock. (This prevents ventricular fibrillation) |