Relocating the requirements for dedicated space below and above switchboards, panelboards, and motor control centers from Sec. 384-4 to Sec. 110-26 (110-16 in the '96 NEC logically combines these requirements with their related working space.
Charlie Trout, author of Code FAQs and Code Question of the Day, has retired. For the rest of 2013, enjoy these snippets from his daily responses. Calculating conductors and breakers