Section 10—Expansion

The modular design of MCCs permits easy expansion to keep pace with an expanding electrical system. When space is available in the existing MCC, starter units can easily be added. Units can be rearranged where necessary. Additional MCC sections can be added to an MCC when space is available. In some cases, units can be replaced with higher-rated units of the same physical size, e.g., a twelve-inch-high, NEMA size one starter unit can be replaced with a twelve-inch-high, size two starter unit.