Panelboard: A single panel or group of panel units designed for assembly in the form of a single panel, including buses and automatic overcurrent devices, and equipped with or without switches for the control of light, heat, or power circuits; designed to be placed in a cabinet or cutout box placed in or against a wall, partition, or other support; and accessible only from the front.
Service Cables: Service conductors made up in the form of a cable. Service cables, where subject to physical damage, shall be protected by any of the following:
Rigid metal conduit
Intermediate metal conduit
Schedule 80 rigid nonmetallic conduit
Electrical metalic tubing
Service Conductors: The conductors from the service point to the service disconnecting means.