FREE Journeyman Electrician's Branch Circuits Questions and Answers

Question 1

If the computation for branch-circuits yields a value of 3.1, how many branch-circuits should be installed?

Accepted Answer

4

Answer

3

Answer

3.5

Answer

3.3

Question 2

What exactly is a single branch circuit?

Accepted Answer

A branch circuit supplying only one utilization equipment

Answer

A branch circuit with a rating of less than 20 amperes

Answer

A branch circuit serving in the power system of one-family dwellings

Answer

A branch-circuit with a single receptacle

Question 3

For twenty (20) baseboard heaters, each rated at 2,250 watts at 220-volts, single-phase, how many branch circuits of 40 amps, at 220-volts, are necessary?

Accepted Answer

7

Answer

9

Answer

8

Answer

6

Question 4

Find the total area of a five-story building with 125 feet by 100 feet of outside space.

Accepted Answer

62,500 sq. ft.

Answer

12,500 sq. ft.

Answer

42,000 sq. ft.

Answer

50,000 sq. ft.

Question 5

Outside measurements of a swelling unit are 60 feet by 45 feet. How many 120-volt, 15-ampere general lighting brand circuits are need for the house?

Accepted Answer

5

Answer

3

Answer

4.5

Answer

4

Question 6

A minimum ampacity of: must be present in the branch circuit conductors feeding a 6 kW, 240-volt, single-phase water heater.

Accepted Answer

31.25 amperes

Answer

37.5 amperes

Answer

25 amperes

Answer

35 amperes

Question 7

What is the dwelling unit load per square foot?

Accepted Answer

3 VA per sq. ft.

Answer

2 VA per sq. ft.

Answer

4 VA per sq. ft.

Answer

1 VA per sq. ft.

Question 8

What is the MAXIMUM continuous load, measured in Volt Ampere, that can be protected by a 20 Ampere Rated Circuit Breaker on a 240 Volt, Single Phase Branch Circuit?

Accepted Answer

3,840 VA

Answer

2,400 VA

Answer

4,800 VA

Answer

2,850 VA

Question 9

Determine the MAXIMUM number of 120-volt fluorescent luminaries (lighting fixtures), each requiring 1.6 amperes, that may be supplied from a 120-volt lighting branch circuit with a 20 ampere rating for a retail store.

Accepted Answer

10

Answer

13

Answer

9

Answer

8

Question 10

When a load is continuous, the maximum current is anticipated to last for AT LEAST:

Accepted Answer

3 hours

Answer

1 hour

Answer

2 hours

Answer

15 minutes