What marking is required on electrical panels for safety?

Arc flash hazard markings are essential for safety on electrical panels as they provide critical information about the potential presence of an arc flash hazard in the vicinity. An arc flash is a dangerous release of energy caused by an electrical fault, which can result in severe injury or death to personnel working near electrical equipment. The markings serve to alert workers to the risk and to the necessary precautions to avoid incidents.

These markings typically specify the incident energy level, the boundaries for safe work practices, and the personal protective equipment (PPE) required when working on or near electrical systems. By having clear and visible arc flash hazard labels, safety protocols can be effectively communicated to all personnel, ensuring they understand the risks and can take the necessary steps to protect themselves.

While labeling with the manufacturer's name, circuit ratings, and voltage warnings are also important for various reasons, they do not specifically address the significant risk presented by arc flash hazards. Therefore, the primary focus of electrical safety in the context of risk awareness is the requirement for arc flash hazard markings.