What is the purpose of arc flash labeling on electrical equipment?

• A. Indicate the owner of the equipment
• B. Inform workers of potential incident energy and PPE requirements for safe operation or maintenance
• C. Display warranty information
• D. Show the operating status indicator

Answer: (B)

Arc flash labeling exists to convey hazard information so workers can protect themselves during operation or maintenance. The label communicates the potential incident energy (often in cal/cm^2) and the minimum PPE required to safely work on or near that equipment. This lets a worker assess the risk and choose the right protective gear, such as face protection, gloves, clothing, and other PPE, and it helps determine safe approach distances or boundaries. Labels may also include system voltage and sometimes fault current data to support proper planning and safe procedures. The main goal is to prevent injury by making the level of protection explicit before any work begins, in line with safety standards like NFPA 70E. It’s not about who owns the equipment, warranty details, or the current operating status, which is why those options don’t fit.