Arc flash

Return to Glossary

An arc flash haszard may exist when energized electrical conductors or ciruit parts are exposed or when they are within equipment in a guarded or enclosed condition, provided a person is interacting with the equipment in such a manner that could cause an electic arc. Under normal operating conditions, enclosed energized equipment that has been properly installed and maintained is not likely to pose an arc flash hazard.

Resource:
NFPA 70E Standard for Electrical Safety in the Workplace 2009 Editon. Chapter 1: Article 100, 70E-9.

See also article: What is Arc Flash?