A 20-amp circuit can safely support about 10 receptacles (outlets) based on the National Electrical Code's (NEC) 80% load rule and assuming a standard load of 1.5 amps per outlet. This means the circuit's safe operating load is around 1,920 watts (0.8 × 20 amps × 120 volts), and dividing that by 180 watts (1.5 amps × 120 volts) per outlet gives roughly 10 outlets
. However, the NEC does not explicitly limit the number of outlets on a 20-amp circuit; the key factor is the total load connected. In practice, professionals recommend a maximum of 10 outlets to avoid overloading and tripping breakers, especially when multiple high-power devices are used simultaneously
. Some sources note that in commercial settings, the limit might be around 10 duplex receptacles (20 outlets), but for residential use, 10 outlets is a common practical guideline
. In summary:
- Maximum recommended outlets on a 20-amp circuit: about 10
- Based on 1.5 amps per outlet and 80% load rule (1,920 watts max)
- NEC does not set a strict outlet count limit; load management is key
- More outlets can be installed physically, but risk of overload increases with device usage
For safety and code compliance, consulting a licensed electrician is advised when planning circuits and outlet counts.
