Preparation of an arc flash analysis and arc flash labeling for existing electrical distribution equipment based on existing building documentation and field verification. The project scope encompassed a comprehensive review of as-built electrical documentation in conjunction with on-site verification of power sources, equipment nameplate data, and overcurrent protective device parameters for over 160 electrical distribution assets throughout the facility. The collected field data informed a detailed arc flash hazard analysis in accordance with IEEE 1584 methodologies, facilitating the calculation of incident energy levels and determination of appropriate Personal Protective Equipment (PPE) categories at each equipment location. Upon completion of the study, standardized arc flash warning labels were generated and affixed to all assessed equipment in compliance with NFPA 70E labeling requirements.