Licensed Electrical Contractor Licensed Electrical Contractor Wiring Methods and Materials Questions and Answers 3

Question 1

What is the minimum trade size of EMT permitted to be installed per NEC 358.20?

Accepted Answer

1/2 inch

Answer

3/4 inch

Answer

3/8 inch

Answer

1 inch

Question 2

Per NEC 334.80, what is the maximum ambient temperature rating for standard Type NM cable?

Accepted Answer

90°C

Answer

60°C

Answer

75°C

Answer

105°C

Question 3

Which of the following wiring methods is NOT permitted in a commercial garage as defined by NEC Article 511?

Accepted Answer

Type NM cable

Answer

Rigid metal conduit

Answer

Type MI cable

Answer

Electrical metallic tubing

Question 4

What is the maximum number of quarter bends (90-degree bends) permitted between pull points in a raceway per NEC 300.14?

Accepted Answer

Four

Answer

Two

Answer

Three

Answer

Five

Question 5

When splicing conductors inside a junction box, what is the minimum volume allowance per conductor for a 12 AWG wire per NEC Table 314.16(B)?

Accepted Answer

2.25 cubic inches

Answer

1.75 cubic inches

Answer

2.00 cubic inches

Answer

2.50 cubic inches

Question 6

What type of cable is required for direct burial without additional raceway protection when installed at the minimum required depth?

Accepted Answer

Type UF cable

Answer

Type NM cable

Answer

Type AC cable

Answer

Type SE cable