Electrical panel labels identify circuit details, voltage ratings, and safety hazards, ensuring compliance with NFPA 70E and OSHA standards. These durable labels help workers operate, maintain, and troubleshoot electrical panels safely in commercial and industrial environments. The key players in this arena are: Each offers standards and best practices to follow. Compliance with permanency of marking requirements helps ensure that the labels will adhere to the application surface, and that the tex ystems for use by product and equipment manufacturers. You can learn what they mean with some help.