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Explosion-proof motors need special attention

  • December 2002
  • Number of views: 455
  • Article rating: No rating

Cyndi Nyberg
Former EASA Technical Support Specialist

Motors that will be used in hazardous locations must meet a variety of special requirements. In these cases, if the motor is not properly specified and/or repaired there can be serious safety consequences.

Hazardous locations are defined as environments where explosive or ignitable vapors or dusts are present, or may become present. Explosion-proof motors are required to ensure that the external temperatures of the motor will not ignite the vapor or dust and also to ensure that any internal faults will be contained within the motor enclosure under all operating conditions.

Requirements for electrical installations in hazardous locations are covered in NFPA 70, the National Electrical Code (NEC).

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