What's the best way to label the box, so people know there are two circuits in the box? Put a divider between the two sides of the box: Then simply label each side of the box as belonging to the appropriate circuit. Note: Make sure the divider you pick will fit. This standard describes requirements for numbering and labeling of real property electrical distribution equipment, circuits, and site lighting at Lawrence Livermore National Laboratory. This is an internal LLNL standard meant to guide the design of new facilities, facility modifications, and. Knowing your distribution box helps you see which breaker does what. This makes fixing problems faster and keeps you safe. They help you turn off the right power fast in emergencies. Yet, one of the most overlooked steps in electrical safety and convenience is correctly labeling each circuit breaker.
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