The number of receptacles that can be installed on a 15-amp circuit varies based on the situation, though there isn't a specific limit set by the National Electrical Code (NEC)
. Considerations for the number of receptacles on a 15-amp circuit:
- General Recommendations Most electricians recommend limiting the number of outlets to 8 to 10 on a 15-amp circuit
- Residential Dwelling Receptacles In residential dwellings, the NEC focuses on the minimum quantity of general-purpose branch circuits, rather than the number of receptacles
- Commercial Receptacle Outlets In commercial settings, each receptacle is assigned a load value of 1.5 amps, and a 15-amp circuit can supply up to 10 outlets
- 80% Load Rule The NEC allows a circuit to supply up to 80% of its stated limit to avoid overloading, meaning a 15-amp circuit should not draw more than 12 amps
- Load Calculation Each outlet is estimated to draw about 1.5 amps, so a 15-amp circuit can typically accommodate around ten outlets
- Unlimited Outlets It is possible to install an unlimited number of outlets on a 15-amp circuit, as long as the total draw doesn't exceed the circuit's capacity
. The number of outlets is less important than how they are used
- Outlet vs. Receptacle "Outlet" refers to the box, while "receptacle" refers to the individual jack. One outlet can have multiple receptacles
