General Purpose Branch Circuit

Receptacle Outlet Picture General purpose branch circuits are 120 volts circuits used for supplying lighting fixtures and receptacle outlets for most small portable appliances. There are usually a number of general purpose branch circuits supplying lights and outlets in different rooms around a residence or commercial or industrial building.

Circuits rated for a maximum of 15 amps using 14 gauge wire were common in older homes but are no longer recommended in new installations. Circuits rated for a maximum of 20 amps using 12 gauge wire are recommended for general purpose branch circuits in modern electrical wiring systems.