Electrical Numbering SystemSchematics and Power Circuit ReferencesPower and Control Cable NumberingLighting and Small Power Cable and Equipment NumberingFerrule Numbering on Control Cables8.1 Lighting and Small Power Cables 1. 1.1. For lighting and small power supplies that are taken from a distribution board, run in armored cable, and scheduled, the cable numbers shall be formed from the distribution board reference, the sub-circuit reference number, and the section of the circuit which is cabled (between fittings). See the followi...See more on paktechpoint
Methods for Quickly Identifying the Wire Numbers in
By comparing the wire numbers in the actual distribution cabinet with those on the wiring diagram, the uses and directions of the wires can be quickly and accurately