All services, feeders, or branch circuits that supply a building or pass through it must be identified by what at each feeder and branch-circuit disconnect location?

• A. A permanent plaque
• B. A temporary sticker
• C. Painted markings
• D. A label on the main panel only

Answer: (A)

Identifying every feeder and branch circuit at each disconnect keeps the electrical system clear and safe for anyone working on it or responding to an emergency. A permanent plaque is designed to stay legible for the life of the installation, resisting heat, moisture, and wear, so you can consistently show what each disconnect supplies or passes through. Temporary stickers can peel or fade, painted markings can wear off, and putting a label only on the main panel misses the need to identify every subsequent disconnect. So, a durable, permanent plaque at each feeder and branch-circuit disconnect location provides reliable, long-lasting identification.