Branch circuits & conductors: Alaska Journeyman Electrician (Certificate of Fitness) Practice Questions

According to the NEC, which dwelling location requires GFCI protection for 125 V, 15 A and 20 A receptacles?

Section 210.8(A) lists bathrooms first among the dwelling locations that need GFCI protection for receptacles. Bedrooms, hallways and dining rooms are AFCI locations, not GFCI locations.

According to the NEC, in a dwelling, receptacles in a garage whose floor is at grade level must have:

Section 210.8(A) requires GFCI protection for receptacles in garages and in accessory buildings with a floor at or below grade not intended as habitable rooms.

According to the 2023 NEC, a receptacle in a finished basement recreation room of a dwelling needs:

Since the 2020 edition, 210.8(A) covers all dwelling basements, finished or unfinished.

Under the 2023 NEC, which kitchen receptacles in a dwelling need GFCI protection?

The 2023 edition dropped the countertop limit for dwelling kitchens in 210.8(A), so all kitchen receptacles within the voltage and current limits of 210.8 need GFCI protection.

According to the NEC, a dwelling receptacle near a wet bar sink needs GFCI protection when it is within what distance of the top inside edge of the sink bowl?

Section 210.8(A) requires GFCI protection for receptacles within 6 ft of the top inside edge of the bowl of any sink.

According to the NEC, in a dwelling, receptacles within 6 ft of the outside edge of a bathtub or shower stall need:

Section 210.8(A) covers areas with a bathtub or shower stall: receptacles within 6 ft of the outside edge need GFCI protection, even where the space is not a bathroom.

According to the NEC, does a 240 V, 30 A dryer receptacle in a dwelling laundry area need GFCI protection?

Since 2020, 210.8(A) applies to 125 V through 250 V receptacles on single-phase circuits of 150 V or less to ground, and laundry areas are a listed location.

Which location was added to the dwelling GFCI list in 210.8(A) by the 2023 NEC?

The 2023 edition added areas with a sink and permanent provisions for food or beverage preparation or cooking, such as wet bars, to the dwelling unit GFCI list in 210.8(A). Indoor damp and wet locations were added earlier, in 2020.

According to the NEC, where must a GFCI device that protects a required receptacle be installed?

Section 210.8 requires the ground-fault circuit interrupter to be installed in a readily accessible location so it can be tested and reset.

According to the NEC, 125 V, 20 A receptacles in a restaurant kitchen need:

Section 210.8(B) requires GFCI protection for receptacles in kitchens of other than dwelling units, including commercial kitchens.

According to the NEC, receptacles installed on the rooftop of a commercial building must have:

Section 210.8(B) lists rooftops among the other-than-dwelling locations that need GFCI protection for receptacles within its voltage and current limits.

According to the 2023 NEC (without state amendments), what is required for a hardwired outdoor outlet on a 240 V, 40 A single-phase circuit at a dwelling?

Section 210.8(F) requires GFCI protection for outdoor outlets at dwellings on single-phase circuits of 150 V or less to ground and 50 A or less. This covers hardwired outlets, not only receptacles. Exception No. 2 exempts listed HVAC equipment until September 1, 2026.

According to the NEC, does the receptacle required near HVAC equipment for servicing need GFCI protection?

Section 210.8 requires GFCI protection for the receptacles required by 210.63 for servicing equipment.

According to the 2023 NEC, does the outlet supplying a dwelling dishwasher need GFCI protection?

GFCI protection for dwelling dishwasher outlets has been required since the 2014 edition, now under 210.8, whether hardwired or cord-and-plug connected.

According to the informational note to the NEC definition, a Class A GFCI trips when the ground-fault current reaches about:

The informational note to the GFCI definition in Article 100 explains that Class A devices trip at 6 mA or higher and do not trip below 4 mA.