Historical
ANSI/NEMA PB 1.1:2007
General Instructions for Proper Installation, Operation, and Maintenance of Panelboards rated 600 Volts or less
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. 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.
CONTENT PROVIDER
NEMA: National Electrical Manufacturers Association [nema]
NEMA: National Electrical Manufacturers Association [nema]