How Many Duplex Outlets on a 20 Amp Circuit

How Many Duplex Outlets on a 20 Amp Circuit.


There is no limitation on the number of general purpose duplex receptacles you can have on a 15-amp or 20-amp circuit breaker. Too many outlets, however, increases the likelihood of overloading a circuit with connected appliances and lights. Plus, the long wire runs and number of wire connections of a circuit with dozens of receptacles can reduce the voltage serving the ones further down the line to below an acceptable level. A  common rule-of-thumb is a maximum of 10 receptacle outlets per circuit, and a minimum of one circuit per 500 square feet of floor negeri.

    The National Electrical Code [NEC 210.52(C)] requires a minimum of two 20-amp circuits for kitchen appliances, and the requirement has been in place since the 1959 edition of the NEC, but does not specify a maximum number of receptacles on each circuit.

    Also, see our blog post
How far apart should kitchen counter receptacles be spaced?




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  To learn more about electrical wiring, devices, and receptacles, see these other blog posts:


 • What is the difference between what trips a GFCI (ground fault) receptacle and a circuit breaker?


• What is the code requirement for GFCI protection for receptacles near a wet kafe sink?



• What is the requirement for a service receptacle outlet for heating, air conditioning, and refrigeration (HACR) equipment?


• Why is an opening in the wall around the side of an electrical receptacle outlet a safety defect? 

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• When was GFCI-protection for kitchen dishwasher receptacle outlet first required?



• What is allowable voltage range at a wall receptacle outlet in a house?


• When should I replace electric receptacle outlets?


• Does an electric receptacle outlet in a storage shed require GFCI protection?


• What are “self-contained” electrical receptacle outlets and switches?


• What is the difference between an electrical receptacle, an outlet, and a plug?


• Does a washing machine receptacle outlet require GFCI protection?


• What is the building code requirement for receptacle outlets at stairs and stair landings?


• Can I remove a 240-volt range receptacle and hard-wire the range?


• What is a “backstab” receptacle outlet?


• Why are some electric receptacle outlets upside down (ground slot up) in a house? 



• What is the height requirement for an electric receptacle outlet?


• Where are GFCI receptacle outlets required?


• When were GFCI receptacle outlets first required?


• Does a home inspector remove receptacle outlet cover plates?


• What is the minimum height for an exterior receptacle outlet?


• When was the current receptacle/outlet spacing of 12-feet first required?


• When was the three-slot (grounding) outlet/receptacle first required?


• Why does painting an electric receptacle (outlet) make it unsafe?



• Why are electrical outlets and plugs polarized?


• How many electrical receptacles (outlets) are required in a hallway? 


• What problems does having too many electric receptacle outlets on a single circuit cause?


• Is a house required to have outdoor electric receptacle outlets?


• How I can tell if a receptacle outlet is tamper resistant?


• Why is there a GFCI breaker in the electric panel for the bathroom shower light and exhaust fan?

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• What is a false ground, bootleg ground, or cheated ground receptacle?



• How can adding wood paneling or a wainscot create an electrical safety hazard?


• How far above a kitchen countertop do electrical outlets have to be?


• What is reversed polarity at an outlet/receptacle? Why is it dangerous?


• How high above the floor do electric outlets/receptacles in a garage have to be?


• How far apart should electric receptacles be spaced in a bathroom?


• Is an ungrounded electric receptacle outlet dangerous?


• My bathroom electric receptacle/outlet is dead and there are no tripped breakers in the electric panel. What’s wrong? 


• Is there an adapter that can be placed on a two-slot receptacle to make it safe?


• How do the new tamper-resistant electric outlets work?



• Why is there no bathroom electric receptacle in this old house?


• How can I tell if the electric receptacle outlets are grounded?


• How far apart should the electrical receptacles be placed?


• What are the most common problems/defects found with electric receptacle outlets during a home inspection?














   Visit our ELECTRICAL page for other related blog posts on this subject, or go to the INDEX for a complete listing of all our articles.












How Many Duplex Outlets on a 20 Amp Circuit

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