General
GFCI and AFCI
Luminaires, receptacles and boxes
Service, Feeders and Disconnects
Grounding and Bonding
100
What does NEC require when conductors 4 AWG or larger enter a cabinet, box, raceway or enclosure?
What is a bushing?
NEC 2020 300.4(G)
100
In dwelling unit garages, all 125‑V through 250‑V receptacles rated 50 A or less must have what type of protection?
What is GFCI protection for personnel?
NEC 210.8(A)
100
In dwelling kitchens, at least how many 20‑A small‑appliance branch circuits are required to serve countertop and wall receptacles?
What is (2) 20a small appliance circuits?
NEC 2020 210.52(B)(3) 210.11(C)(1)
100
in other than one and two family dwellings a disconnecting means must be clearly marked to indicate what specific information?
What is the source that supplies the circuit disconnecting means?
NEC 2020 110.22(A)
100
Minimum wire size for an A/C with the following specs:
What is #10 AWG
200
When installing an outdoor panel, ATS, or similar enclosure, when are fittings required to be listed for wet locations for cable or raceway entrances into the cabinet?
when entering above the level of live parts
312.2
200
For outdoor receptacles at one‑ and two‑family dwellings rated up to 50 A, what type of protection is required?
What is GFCI protection?
NEC 2020 210.8(A)
200
In dwelling unit habitable rooms, what is the general spacing requirement for wall receptacles?
What is 6 ft from a receptacle (12 ft between receptacles), and within 6 ft of door openings.
NEC 2020 210.52(A)
200
What is the minimum size service allowed for a single family dwelling unit?
100A
230.79(C)
200
What is the minimum size required for equipotential bonding of pool equipment?
What is 8 AWG copper solid
NEC 2020 680.26
300
A vending machine in a commercial building connected by a 125‑V cord and plug must have this protection, even if not in a damp location.
What is GFCI protection?
NEC 2020 422.5(A) and 422.5(B)(4)?
300
If I am adding a new receptacle and 4' of wire do I need to add AFCI protection?
What is yes?
NEC 2020 210.12(D)
300
What is the maximum allowed voltage between conductors for branch circuits supplying luminaires in dwelling units?
what is 120v nominal?
NEC 2020 210.6(A)(1)
300
In general, what is the maximum number of disconnects permitted for a single service to a building or structure?
What is six service disconnects?
NEC 2020 230.71(B)
300
For a 200‑A, single‑phase dwelling service with metal underground water pipe, what is the minimum copper grounding electrode conductor to the water pipe?
What is 4 AWG Copper?
NEC 2020 250.66
400
What is the minimum working space depth in front of 601 V or greater equipment where there are exposed live parts on one side and grounded parts on the other?
What is 4 feet?
NEC 2020 110.26(A)(1) Condition 2
400
The 2020 NEC added GFCI requirements for which household appliances?
- Automotive vacuum machines
- Drinking water coolers and bottle fill stations
- Cord-and-plug-connected high-pressure spray washing machines
- Tire inflation machines
- Vending machines
- Sump pumps
- Dishwashers
NEC 2020 422.5(A)
400
What is the General Lighting and Receptacle load for a dwelling unit?
What is 3VA per square foot?
400
What is the minimum size aluminum feeder conductor allowed for a 100‑A feeder using 75°C terminations?
What is #1 AWG Aluminum?
NEC 2020 310.16
400
When are bonding bushings required to be used?
on metal service raceways
250.92(B)
500
The smallest wire size that can be phased
4 AWG
500
Hardwired EV Charging outlets installed inside of a garage requires GFCI protection? Yes or no?
What is No?
NEC 210.8(A)
500
All Receptacles in damp or wet locations must have what type of cover when in wet locations and in use?
What is Weatherproof “in‑use”?
(extra‑duty for 15‑ and 20‑A, 125‑ and 250‑V in wet locations)
NEC 2020 406.9(B)(1)
500
Which of the following is NOT a standard size breaker?
35, 55, 90, or 110
What is 55
240.6?
500
A metal water pipe must be in contact with the earth for ___ft to be used as a grounding electrode.
What is at least 10 ft of contact with earth for metal underground water pipe
NEC 2020 250.52(A)(1) and (A)(2)