What must be clearly marked on an electrical panel?

Circuit identification must be clearly marked on an electrical panel to ensure safety and proper functioning. This labeling is crucial for anyone working on the electrical system because it allows quick identification of which circuits are connected to specific areas or devices in a building. Proper circuit identification directs users to the correct switches during maintenance, troubleshooting, or emergencies, reducing the potential for accidents and enhancing the efficiency of electrical work.

Moreover, clear circuit identification helps in compliance with national and local electrical codes, promoting overall safety standards in electrical installation and maintenance practices. The labels should indicate the purpose or the specific areas served by each circuit, making it easier to identify issues, overloads, or necessary shutoffs. This clarity is particularly important in residential, commercial, and industrial sites where multiple circuits may serve diverse functions.