Conductor Labeling: Wire tagging, color-coding, or number schemes to identify circuits, voltage, or phase. Junction and Pull Box Tags: Provides location ID and connects. 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. Here is a simple table that shows what it does: Sends electricity from the main supply to each circuit. Every area gets the power it needs. Uses breakers or fuses to stop too much current.