California Electrical Contractor License Practice Test - Free 20 Questions

Question 1

What is the maximum number of 15-amp receptacles allowed on a 20-amp commercial branch circuit? (Topic Ref #0)

Accepted Answer

13

Answer

10

Answer

15

Answer

8

Question 2

Which of the following is required for burying Type UF cable 18 inches deep under a residential driveway? (Topic Ref #1)

Accepted Answer

GFCI protection

Answer

Rigid conduit

Answer

None

Answer

Warning ribbon

Question 3

What is the minimum size copper equipment grounding conductor for a 100-amp overcurrent device? (Topic Ref #2)

Accepted Answer

#8 AWG

Answer

#10 AWG

Answer

#4 AWG

Answer

#6 AWG

Question 4

Conductors in a raceway that is more than 24 inches long must not exceed what percentage of the cross-sectional area? (Topic Ref #3)

Accepted Answer

40%

Answer

60%

Answer

31%

Answer

53%

Question 5

What is the minimum clearance in front of a 480V panelboard with exposed live parts on one side and a grounded wall on the other? (Topic Ref #4)

Accepted Answer

4 feet

Answer

3 feet

Answer

5 feet

Answer

3.5 feet

Question 6

A 4-inch square box with a 1.5-inch depth (21.0 cu in) contains four #12 THHN wires. How many more #12 wires can be added? (Topic Ref #5)

Accepted Answer

5

Answer

3

Answer

4

Answer

2

Question 7

Liquidtight flexible nonmetallic conduit (LFNC) must be supported at intervals not exceeding ____ feet. (Topic Ref #6)

Accepted Answer

3

Answer

5

Answer

10

Answer

6

Question 8

What is the minimum radius of a bend in 1-inch RMC containing four conductors? (Topic Ref #7)

Accepted Answer

6 inches

Answer

5 inches

Answer

4 inches

Answer

8 inches

Question 9

Grounding electrode conductors (GEC) must be protected if they are smaller than ____. (Topic Ref #8)

Accepted Answer

#6 AWG

Answer

#8 AWG

Answer

#4 AWG

Answer

#10 AWG

Question 10

The total number of bends in a single run of conduit shall not exceed ____ degrees. (Topic Ref #9)

Accepted Answer

360,180

Answer

270

Answer

90

Answer

Question 1 of 270

What is the maximum number of 15-amp receptacles allowed on a 20-amp commercial branch circuit? (Topic Ref #0)