National Fire Protection Association (NFPA) statistics indicate the majority of hospital admissions for on-the-job electrical accidents result from arc flash burns — not electrical shock. Burn centers in the United States receive more than 2,000 cases of severe arc-flash burns annually. Causes of arc flashes include human factors, such as accidental contact with a live conductor or improper installation practices, and mechanical factors, such as loose connections or misplacing a part. The facility’s environment also can be a factor, because dust, impurities and moisture can infiltrate and corrode contact and protection surfaces.
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