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NEC CODE NEC 2023

Service Entrance , Branch circuits and feeder conductors-2

Service Entrance , Branch circuit conductors and Feeder conductor theory and practice test -2

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The National Electrical Code (NFPA 70) is the benchmark standard for safe electrical installation in the US. It is updated every 3 years by the NFPA.

Study the edition adopted by your state. As of 2025, most states use the 2020 or 2023 NEC. These tests are written to the 2023 edition.

The most tested articles are 100 (Definitions), 200–250 (Wiring & Grounding), 300–314 (Wiring Methods), 400–411 (Conductors), 430 (Motors), and 700–701 (Emergency Systems).

10

Questions

17 min

Time

70%

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Service Entrance , Branch circuits and feeder conductors-2 — Question List

Question 1: Two transformers each are rated for 480 VA are connected from a 120 volts single feeder. One utilization equipment rated 80 VA is also fed from the same feeder circuit. Which of the following is the minimum ampere rating of feeder?

9 ampere
10 ampere
12 ampere
7 ampere

NEC Reference: NEC 215.52(B)

Question 2: If the dwelling unit rated lighting load is 4000 VA, which of the following is the total branch circuit load calculated for general illumination?

3350 VA
4000 VA
3200 VA
3600 VA

NEC Reference: NEC 220.42

Question 3: What is the branch circuit load calculated for show window which has horizontal size of 10 feet?

2000 V-A
1800 V-A
1600 V-A
2200 V-A

NEC Reference: NEC 220.43(A)

Question 4: How many minimum number of 15-amp No.14 branch circuits are required to provide lighting load for a 2000 sq.ft dwelling unit operated at 120 volts?

3
4
5
6

Question 5: A retail shop consists of 20 15 amp duplex receptacles. which of the calculated load of duplex receptacles in retail shop?

300 volt-ampere
3600 volt-ampere
1800 volt-ampere
36000 volt-amperes.

NEC Reference: NEC 220.14(I)

Question 6: How many maximum number of receptacles are permitted on a 20 ampere breaker supplied by 120 volts power source in a shopping complex?

13
10
18
11

NEC Reference: NEC 220.14(I)

Question 7: If a single piece of equipment consists of five receptacles on it, what is the total calculated load?

450 Volt-Ampere.
900 Volt-Ampere
600 Volt-ampere
800 Volt-Ampere.

NEC Reference: NEC 220.14(I)

Question 8: How many number of 15 ampere 2 wire branch circuits are required for general lighting load in a 120/240 volts 1200 sq.ft dwelling unit?

1
2
3
4

NEC Reference: NEC 220.12

Question 9: What is the minimum laundry circuit load that shall be considered for each 2-wire laundry branch circuit in dwelling unit?

1500 Volt-Amperes
1200 Volt-Amperes
1000 Volt-Amperes
800 Volt-Amperes

NEC Reference: NEC 220.52(B)

Question 10: The maximum unbalanced load of a service or feeder is the maximum net calculated load between hot and neutral conductor.

True
False

EXAM CARD NEC CODE

Questions10

Time limit17 min

Pass score70%

Code editionNEC 2023

DifficultyIntermediate

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