Fundamentals of Electrical Hazards

? More than 3 ma

painful shock

? More than 10 ma

muscle contraction “no-let-go” danger

? More than 30 ma

lung paralysis- usually temporary

? More than 50 ma

possible ventricular fib. (heart dysfunction, usually fatal)

? 100 ma to 4 amps

certain ventricular fibrillation, fatal

? Over 4 amps

heart paralysis; severe burns. Usually caused by  volts