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An electrical injury (electric injury) or electrical shock (electric shock) is damage sustained to the skin or internal organs on direct contact with an electric current. [ 2 ] [ 3 ] The injury depends on the density of the current , tissue resistance and duration of contact. [ 4 ]
Electric shock — Physiological reaction of a biological organism to the passage of electric current through its body. Ferranti effect — A rise in the amplitude of the AC voltage at the receiving end of a transmission line , compared with the sending-end voltage, due to the capacitance between the conductors, when the receiving end is open ...
An electric arc between two nails. An arc flash is the light and heat produced as part of an arc fault (sometimes referred to as an electrical flashover), a type of electrical explosion or discharge that results from a connection through air to ground or another voltage phase in an electrical system.
Three elements are required for an electrocution to occur: (a) a charged electrical source, (b) a current pathway through the victim, (c) a ground. The health hazard of an electric current flowing through the body depends on the amount of current and the length of time for which it flows, not merely on the voltage. However, a high voltage is ...
Faulty electrical connections and damaged electrical equipment can lead to an electric shock to workers and to others at or near the workplace. [ 35 ] According to the Bureau of Labor Statistics , a total 1,738 accidents occurred due to contact with electric current between 2003 and 2010, and out of that, the highest number of electrical ...
For example, hydrogen gas, natural gas, or petrol/gasoline vapor mixed with air can be ignited by sparks produced by electrical apparatus. Examples of industrial facilities with hazardous areas are petrochemical refineries, chemical plants, grain elevators, and coal mines. Measures taken to prevent such explosions include:
Electrical circuits may be connected to ground for several reasons. Exposed conductive parts of electrical equipment are connected to ground to protect users from electrical shock hazards. If internal insulation fails, dangerous voltages may appear on the exposed conductive parts.
Possible sources of macroshock include: poorly designed or malfunctioning electrophysiology equipment, lightning, damaged power cords or other electrical hazards around the household, downed power lines, high-voltage electrical equipment such as transformer stations and other industrial electrical equipment, and malfunctioning electrical or electricity-using mechanical equipment capable of ...