NEC Electrical Assessment 3 — Questions and Answers
Question 1: Per NEC 210.8, GFCI protection is required for 125V receptacles in which location?
- Bathrooms (Correct answer)
- Bedrooms
- Living rooms
- Hallways
Correct answer: Bathrooms
NEC 210.8(A) requires GFCI protection for receptacles in bathrooms.
Question 2: What is the maximum spacing between receptacles along a wall in a dwelling living area?
- 12 ft (Correct answer)
- 6 ft
- 20 ft
- 8 ft
Correct answer: 12 ft
NEC 210.52(A) requires receptacles so no point along the wall is more than 6 ft from one, meaning max 12 ft apart.
Question 3: Arc-fault circuit-interrupter (AFCI) protection is primarily intended to prevent what hazard?
- Fires from arcing faults (Correct answer)
- Electric shock
- Overvoltage damage
- Lightning strikes
Correct answer: Fires from arcing faults
AFCI devices detect arcing conditions and de-energize the circuit to reduce fire risk.
Question 4: What is the minimum number of 20A small-appliance branch circuits required for a dwelling kitchen?
- 2 (Correct answer)
- 1
- 3
- 4
Correct answer: 2
NEC 210.11(C)(1) requires at least two 20A small-appliance branch circuits for kitchen countertop receptacles.
Question 5: Receptacles installed for countertops must have GFCI protection and be spaced so no point is more than what distance from one?
- 24 in (Correct answer)
- 48 in
- 12 in
- 36 in
Correct answer: 24 in
NEC 210.52(C) requires no point along a countertop wall line to be more than 24 in from a receptacle.
Question 6: What rating of branch circuit is required for a 120V bathroom receptacle circuit in a dwelling?
- 20 A (Correct answer)
- 15 A
- 30 A
- 40 A
Correct answer: 20 A
NEC 210.11(C)(3) requires at least one 20A branch circuit for bathroom receptacles.
Question 7: At what height above the floor is a receptacle no longer considered to serve a countertop in a kitchen?
- 20 in above the countertop (Correct answer)
- 12 in above the floor
- 6 ft above the floor
- It always counts regardless of height
Correct answer: 20 in above the countertop
Receptacles more than 20 in above the countertop are not counted as serving the countertop per NEC 210.52(C).
NEC Electrical Assessment 3
Per NEC 210.8, GFCI protection is required for 125V receptacles in which location?