Quick Answer: A 15-amp circuit can safely support up to 8 outlets under the electrician's 80% rule (technically up to 10 by raw math, but 8 is the safe practice standard). The National Electrical Code (NEC) serves as a benchmark for electrical installations, ensuring safety and functionality in residential and commercial settings. These numbers assume standard receptacles drawing an average of 1. 5 amps. The closest guideline to how many outlets can you put on 15A, 20A, or 30A circuits is found in the NEC 210. 21 Chapter titled 'Outlet devices'. In practice, this usually means 10-12 double plug sockets for most homes. But here's the thing - I've installed rings with 8 sockets that were overloaded, and others with 15 sockets that worked perfectly fine. 14 (I), a commercial convenience receptacle outlet is calculated at 180 volt-amperes (va) per single or multiple receptacles on one yoke.
[PDF Version]