TN LLE Wiring Methods and Installation 1

Question 1

According to NEC Table 300.5, what is the minimum burial depth for Type UF cable used for a 120/240V residential branch circuit?

Accepted Answer

12 inches

Answer

NEC Table 300.5 requires Type UF cable to be buried a minimum of 12 inches deep for residential branch circuits.

Question 2

Under NEC 300.4(A)(1), where cables pass through bored holes in wood framing, the edge of the hole must be at least how far from the nearest edge of the wood member (or a steel protective plate must be installed)?

Accepted Answer

1-1/4 inches

Answer

NEC 300.4(A)(1) requires the edge of bored holes to be at least 1-1/4 inches from the nearest edge of the wood member to protect cables from nails and screws.

Question 3

According to NEC 334.30, Type NM cable must be secured within how many inches of every cabinet, box, or fitting it enters?

Accepted Answer

12 inches

Answer

NEC 334.30 requires NM cable to be secured within 12 inches of every cabinet, box, or fitting.

Question 4

According to NEC 334.30, what is the maximum interval for securing and supporting Type NM cable in exposed locations?

Accepted Answer

4.5 feet

Answer

NEC 334.30 requires NM cable to be secured and supported at intervals not exceeding 4.5 feet in exposed locations.

Question 5

Which of the following wiring methods is NOT permitted in wet locations?

Accepted Answer

Type NM cable

Answer

Type NM cable is prohibited in wet or damp locations per NEC 334.12; RMC, IMC, and LFMC are all listed for use in wet locations.

TN LLE - Tennessee Limited Licensed Electrician Practice Test

TN LLE - Tennessee Limited Licensed Electrician Practice Test

TN LLE Wiring Methods and Installation 1