Journeyman Electrician’s Exam Journeyman Electrician's Branch Circuits 5

Question 1

A branch circuit in a commercial building supplies a continuous fluorescent lighting load of 24 amperes. The minimum overcurrent device rating must be:

Accepted Answer

30 amperes

Answer

NEC 210.20(A) requires the overcurrent device to be rated at least 125% of the continuous load: 24A × 1.25 = 30A.

Question 2

What NEC section addresses the minimum receptacle requirements for countertop surfaces in a dwelling unit kitchen?

Accepted Answer

210.52(C)

Answer

NEC 210.52(C) specifies the placement and quantity of receptacles required for kitchen countertop surfaces.

Question 3

A branch circuit tap made within a panelboard must comply with NEC tap rules. Which condition permits a tap conductor smaller than the feeder?

Accepted Answer

The tap is no longer than 25 feet and is no smaller than 1/3 the feeder ampacity

Answer

NEC 240.21(B)(2) permits a 25-foot tap rule when the tap conductor is at least 1/3 the ampacity of the feeder and terminates in a single breaker.

Question 4

In a guest room of a hotel, GFCI protection is required for all:

Accepted Answer

125-volt, 15- and 20-ampere receptacles

Answer

NEC 210.8(B)(2) requires GFCI protection for all 125-volt, 15- and 20-ampere receptacles in hotel and motel guest rooms.

Question 5

What is the maximum distance allowed between the overcurrent protection and a tap conductor in the 10-foot tap rule?

Accepted Answer

10 feet

Answer

NEC 240.21(B)(1) permits unprotected tap conductors up to 10 feet long when the tap conductor ampacity is not less than the combined loads supplied.

Journeyman Electrician’s Exam Practice Test

Journeyman Electrician’s Exam Practice Test

Journeyman Electrician’s Exam Journeyman Electrician's Branch Circuits 5