Arc Flash Labeling

An important safety objective of an Arc Flash Hazard Analysis is to inform workers of the risk of an arc flash potential by labeling electrical equipment. Labels identify life saving information. These requirements are specified in the 2008 NEC 110.16 and states that "all switchboards, panel boards, industrial control panels and motor control centers be labeled". Warning Labels apply to both qualified workers as well as supervisors, managers or other employees who may be within the Arc Flash Protection Boundary.

The Arc Flash Protection Boundary is the distance from a potential arc source that a person could sustain a second degree burn. The boundary is based on voltage, available fault current, and the time it takes for the upstream protective device to operate and clear the fault.

Information on an Arc Flash Hazard warning label should include:

• Flash Protection Boundary distance
• Hazard/Risk Category level (0-4) defined by NFPA 70E 2009
• Required Protective Clothing and PPE
• Shock Hazard when enclosed equipment is exposed
• Equipment name and field marked location

The NEC 2008 states that "Arc Flash Hazard labels warn qualified person of the potential arc flash hazard for a piece of electrical equipment".

Arc Flash Studies

• Arc Flash Hazard Analysis (AFHA) NFPA-70E
• Single-line Diagrams
• Short Circuit Studies
• Overcurrent Protective Device Coordination
• Equipment Evaluation
• Arc Flash Results
• Arc Flash Labeling
• Customized Site-Specific NFPA-70E Arc Flash Training
• Personal Protective Equipment (PPE)

• Arc Flash Codes and Regulations

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