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Nov 17, 2023 · Learn how voltage, current, resistance and time affect the outcome of electric shocks on humans. Find out the lethal current levels, the factors that influence them and the effects of different voltages on the body.
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The voltage necessary to produce the fatal current is dependent upon the resistance of the body, contact conditions, and the path through the body. (See table 1-I). Sufficient current passing through any part of the body will cause severe burns and hemorrhages.
Current: The higher the current, the more likely it is lethal. Since current is proportional to voltage when resistance is fixed ( ohm's law ), high voltage is an indirect risk for producing higher currents.
Any electrical device used on a house wiring circuit can, under certain conditions, transmit a fatal current. While any amount of current over 10 milliamps (0.01 amp) is capable of producing painful to severe shock, currents between 100 and 200 mA (0.1 to 0.2 amp) are lethal.
For women, it is typically 5 to 7 milliamperes, and for men, typically 7 to 9 milliamperes. This is dependent on the muscle mass of the individual. In general, current that is fatal to humans ranges from 0.06 A to 0.07 A, depending on the person and the type of current. Jack Hsu -- 2000.
Bibliographic EntryResult (w/surrounding Text)Standardized ResultCutnell, John D., Johnson, Kenneth W."Currents of approximately 0.2 A are ...0.2 ACarr, Joseph J. Safety for electronic ..."In general, for limb-contact electrical ...0.1–0.3 A"Electrical Injuries." The Merck Manual ..."At currents as low as 60 to 100 ...0.06–0.1 A (AC) 0.3–0.5 A (DC)Zitzewitz, Paul W., Neff, Robert F."The damage caused by electric shock ...0.07 Abe deadly. Below you can see that different levels of electrical current, or milliamps, in the human body cause different reactions: • 1-2 milliamps: Threshold of sensation • 3-8 mA: Mild to painful shock • 10-15 mA: Cannot release hand grip • 20-60 mA: Severe shock and breathing difficulties • 70-200 mA: Risk of death from heart failure
Current will kill you but some amount of voltage is required to flow that current in the body breaking the human body resistance. In other words, an enough power is required to pass in the human body for proper electric shock.
