![]() ![]() Role of protective clothing in determining arc boundary This may include wearing protective clothing and equipment, following safe work practices, and being aware of the location of the arc flash boundary at all times. It is important for workers who may be exposed to arc flash hazards to understand the arc flash boundary and to take appropriate precautions to protect themselves. For example, an arc flash in a high-voltage substation may have a larger arc flash boundary than an arc flash in a residential building. ![]() In general, the larger the potential energy of the arc flash, the larger the arc flash boundary will be. The boundary is typically marked with warning signs and labels to alert workers of the danger. The arc flash boundary is determined by the potential energy of the arc flash, as well as the type and amount of protective clothing and equipment that a person is wearing. It is caused by a fault or malfunction in the system, and it can release a huge amount of energy in the form of heat, light, and pressure. An arc flash is a type of electrical explosion that occurs when there is a sudden release of electrical energy from an electrical system. This includes areas where electrical panels and switchgear are located, as well as areas where electrical cables and wires are present.Īn arc flash boundary is a distance from electrical equipment within which a person could receive a dangerous electrical shock or burn from an arc flash. In general, any location where electrical equipment is used or maintained is at risk for an arc flash hazard.
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