Journeyman Electrician’s Exam Journeyman Electrician's 4

Question 1

What is the maximum length of a fixture whip made from flexible metal conduit connecting a luminaire to the branch circuit wiring?

Accepted Answer

6 feet

Answer

NEC 410.117(C) allows flexible metal conduit for fixture whips up to 6 feet in length within the cavity of a ceiling.

Question 2

Which NEC article covers the installation of electrical wiring in patient care areas of healthcare facilities?

Accepted Answer

Article 517

Answer

NEC Article 517 covers electrical installations in health care facilities, including patient care areas with specific grounding and wiring requirements.

Question 3

A 3-phase, 4-wire wye system has a line-to-line voltage of 208V. What is the line-to-neutral voltage?

Accepted Answer

120V

Answer

For a wye system, the line-to-neutral voltage equals the line-to-line voltage divided by the square root of 3 (√3): 208 ÷ 1.732 ≈ 120V.

Question 4

Under the NEC, which of the following conductors is NOT counted as a current-carrying conductor for conduit fill derating purposes?

Accepted Answer

Neutral conductor carrying only unbalanced load

Answer

Per NEC 310.15(E), a neutral conductor that carries only the unbalanced current of a multi-wire branch circuit is not counted as a current-carrying conductor.

Question 5

What is the minimum height above a residential kitchen counter that an outlet must be installed?

Accepted Answer

There is no minimum height specified — outlets must be within 24 inches of a counter edge

Answer

NEC 210.52(C)(1) requires counter top receptacles within 24 inches horizontally of the counter edge but does not specify a minimum height above the counter.

Journeyman Electrician’s Exam Practice Test

Journeyman Electrician’s Exam Practice Test

Journeyman Electrician’s Exam Journeyman Electrician's 4