What multiple-outlet branch-circuit rating is permitted for lighting and receptacle circuits in dwelling unit(s)?

For lighting and receptacle circuits in dwelling units, both 15-amp and 20-amp multiple-outlet branch circuits are permitted. This flexibility allows for adjustments based on the intended use and load requirements of the circuits.

A 15-amp circuit is often suitable for general lighting and light-duty receptacle use, ensuring that typical household appliances and fixtures can operate without overloading the system. On the other hand, a 20-amp circuit is beneficial for areas where heavier electrical loads might be expected, such as kitchens or specific dedicated circuits for larger appliances.

By allowing either a 15-amp or a 20-amp rating, building codes accommodate a variety of electrical needs while ensuring safety and functionality in residential settings. The regulations are designed to support the load calculations and electrical demand of a dwelling unit, promoting both efficiency and safety in electrical design. This dual option facilitates a balanced approach to circuit design in homes.