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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. Arc flash is distinctly different from the arc blast, which is the supersonic ...
An electric arc between two nails. An electric arc (or arc discharge) is an electrical breakdown of a gas that produces a prolonged electrical discharge. The current through a normally nonconductive medium such as air produces a plasma, which may produce visible light. An arc discharge is initiated either by thermionic emission or by field ...
A power flash is a flash of light caused by arcing electrical discharges from damaged electrical equipment, most often severed or arcing power lines. They are often caused by strong winds, especially those from tropical cyclones and tornadoes , and occasionally by intense downbursts and derechoes .
An arc fault is a high power discharge of electricity between two or more conductors. This discharge generates heat, which can break down the wire's insulation and trigger an electrical fire. Arc faults can range in current from a few amps up to thousands of amps, and are highly variable in strength and duration.
Articles relating to electric arcs, electrical breakdowns of a gas that produce a prolonged electrical discharge. The current through a normally nonconductive medium such as air produces a plasma ; the plasma may produce visible light .
Flashtubes produce an electrical arc flash contained in a glass tube. As the arc develops, a supersonic shock-wave forms, traveling radially from the center of the arc and impacting the inner wall of the tube. If the energy level is low enough, a tap against the glass is all that will be heard.
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