Remember, those cannot be plugged into a 15 amp rated outlet receptacle (the plug will not fit), so consider that before outlet installation. The same applies to the kitchen outlets, laundry room and other areas that require a 20 amps rated branch circuit – check with your local building department.Īlso, you’ll find devices / appliances that are equipped with a 20 amp rated / type cord and plug. Shouldn’t those more powerful hair dryers have a plug designed for a 20 amp rated outlet receptacle? I think they should. This is because some of the devices (1875Watts hair dryer for example) you may want to plug into those 15 amp rated outlets draw more that the maximum permitted 12 amps. However, your local jurisdiction might require those receptacles to be 20 amps rated instead. Let’s apply that to a bathroom theoretically, you could have two or more15 amps rated GFCI outlets installed / supplied by a 20A, single branch circuit. The following is based on the 2008 NEC (National Electrical Code) Edition.Īrticle 210.21 states that the amperage rating of outlet devices shall not be less than the load to be served by those outlets.īased on that table, two or more 15 amp rated GFCI outlet receptacles can be installed on a 20 amp rated circuit breaker if the load of the devices connected to each one of those outlet receptacles is less than 12 amps (80% of its rating). In other words, they supposed to withstand the loads of a 20A rated device. 15 amps outlet receptacles are rated for 20 amps feed-through.It doesn’t matter if the end device is 15 or 20 amps rated. The wires (electrical conductors) between the 20 amp rated circuit breaker and this GFCI outlet receptacle (or any outlet receptacle) must be at least 20 amp rated (gauge 12).
Additionally, there may be some regulations applicable only to a particular area this GFCI is going to be installed, or your local jurisdiction requirements. Whenever installing a GFCI outlet receptacle on a 20 amp breaker, what should be used, a 20 amp GFCI, or is a 15 amp GFCI OK too? The rules that apply to installation of a GFCI outlet receptacle on a 15 or / and 20 amp rated circuit breaker are the same as the ones that apply to a regular outlet receptacle.
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