What to Know About Arc Flash Safety Arc Flash Hazard Labeling National Electrical Code (NEC 110.16) states a warning label must be placed on electrical equipment that may remain energized during maintenance or repair. Complying with Arc Flash Requirements •According to the NFPA 70E standard, there are six primary responsibilities that facilities must meet. These responsibilities include: - Training for employees - Written safety program in place that is actionable - Personal Protective Equipment (PPE) available for employees - Insulated tools - Arc flash hazard degree calculations - Properly labeled equipment What Equipment Requires an Arc Flash Label? •Labeling is required for any piece of electrical equipment that may need examination, adjustment, service, or maintenance while energized, creating the potential for an arc flash incident to occur. What to Know GCFI: Ground Fault Circuit Interrupter is a fast-acting circuit breaker designed to shut off electric power in the event of a ground-fault within as little as 1/40 of a second. It works by comparing the amount of current going to and returning from equipment along the circuit conductors. When the amount going differs from the amount returning by approximately five milliamperes, the GFCI interrupts the current. Point Count: The number of electrical switches and boxes over 220 volts in the facility. Line Drawing: This electrical one-line diagram is the facility electrical distribution road map and is a key part of an arc flash analysis. SAFETY FOR TECHNICAL SUPPORT CONTACT: SAFETYQUESTIONS@FASTENAL.COM OR 1-833-FNL-SAFE
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