Human Thresholds of Electric Shock at Power Transmission Frequencies
- 1 October 1970
- journal article
- research article
- Published by Taylor & Francis in Archives of environmental health
- Vol. 21 (4) , 547-552
- https://doi.org/10.1080/00039896.1970.10667288
Abstract
Reliable quantitative data about electric shock to humans at power transmission frequencies are available for three physiological responses to electrical stimulation: perception, uncontrollable muscular contraction, and death. Some humans can perceive less than 0.5 rna of 50 to 60 Hertz current, depending upon the type of hand contact made with an electrically energized circuit. Most adult male workers should be able to release 9 rna of 50 to 60 Hz current. A safety threshold of 5 ma, recommended for the general population including children, is based upon the conclusion that current in excess of release threshold should be regarded as hazardous and potentially lethal. Relevant threshold conditions inctude body size, current pathway, contact duration, and total resistance. Voltages calculated from reliable experimental data on effective currents and expected resistances are lower than voltages generally recommended to be safe.Keywords
This publication has 19 references indexed in Scilit:
- Hazards in the use of low frequencies for the measurement of physiological events by impedanceMedical & Biological Engineering & Computing, 1969
- Effect of Electrical Stimulation on Sensation ThresholdPerceptual and Motor Skills, 1967
- Electric Shock Hazard of Underwater Swimming Pool Lighting FixturesIEEE Transactions on Power Apparatus and Systems, 1964
- ELECTRICAL HAZARDS ASSOCIATED WITH CARDIAC PACEMAKING*Annals of the New York Academy of Sciences, 1964
- Effect of Frequency on Let-Go CurrentsTransactions of the American Institute of Electrical Engineers, 1943
- Excitation and accommodation in nerveProceedings of the Royal Society of London. B. Biological Sciences, 1936
- Electrical impedance of the human bodyJournal of the Franklin Institute, 1935
- A method for the investigation of the impedance of the human body to an alternating currentJournal of the Institution of Electrical Engineers, 1933
- The Goulstonian Lectures ON DEATH BY ELECTRIC CURRENTS AND BY LIGHTNING: Delivered before the Royal College of Physicians of LondonBMJ, 1913