Journeyman Electrician’s Exam Wiring Methods and Materials

Question 1

Per NEC Chapter 9 Table 1, what is the maximum conduit fill percentage when 4 or more conductors are installed?

Accepted Answer

40%

Answer

NEC Chapter 9, Table 1 limits conduit fill to 40% of the cross-sectional area when 4 or more conductors are installed.

Question 2

Which cable type is NOT permitted for use in wet or damp locations?

Accepted Answer

Type NM cable

Answer

Type NM (Romex) cable is only listed for use in dry locations and is prohibited in wet or damp environments.

Question 3

Per NEC Table 300.5, what is the minimum cover requirement for RMC installed beneath a one- or two-family dwelling driveway?

Accepted Answer

6 inches

Answer

NEC Table 300.5 requires only 6 inches of cover for RMC under a one- or two-family dwelling driveway due to its mechanical strength.

Question 4

Per NEC 350.30(A), what is the maximum length of flexible metal conduit (FMC) permitted when used as a luminaire whip?

Accepted Answer

6 feet

Answer

NEC 350.30(A) limits FMC used as a fixture whip to a maximum length of 6 feet.

Question 5

Which cable type is specifically listed and permitted for installation in a cable tray system?

Accepted Answer

Type MC

Answer

Type MC (Metal-Clad) cable is listed for use in cable tray systems per NEC Article 392 and 330.

Journeyman Electrician’s Exam Practice Test