This standards publication covers single panelboards or groups of panel units suitable for assembly in the form of single panelboards, including buses, and with or without switches or automatic overload protective devices (fuses or circuit breakers), or both. These units are used in the distribution of electricity for light, heat, and power at 1000 volts and less with:
a. 1600 ampere mains and less
b. 1200 ampere branch circuits and less
Specifically excluded are live front panelboards, panelboards employing cast enclosures for special service conditions, and panelboards designed primarily for residential and light commercial service equipment.
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Published Date: May 15, 2025
Number of pages: 37
Staff Contact: Zijun Tong