Journeyman Electrician Practice Test 7

Question 1: A NO.6 THW conductor is placed in a room where the ambient temperature of room is 52⁰C. What is its allowable ampacity?

• 65 amperes
• 50 amperes
• 67 amperes
• 44 amperes

NEC Reference: NEC 310.15(B)(2)(b)

Question 2: The Minimum working clear distance in front of the enclosed equipment operating at a voltage 240 volts is ................ feet

• 1
• 2
• 3
• 4

NEC Reference: NEC 110.26

Question 3: Dead ends of metal wireways need not be closed.

• True
• False

NEC Reference: NEC 376.58

Question 4: The conductors sized 1/0 AWG or smaller shall be permitted to be run in parallel for frequencies higher than ................... HZ.

• 300
• 360
• 120
• 240

Question 5: The motor ground fault protective device need to be capable of carrying the starting current of the motor.

• TRUE
• FALSE

NEC Reference: NEC 430.53

Question 6: In an electrical circuit the power dissipation in a resistor will be 1.2 W, which of the following resistor is best suitable to use under this power dissipation.

• carbon film
• metal film
• thick film
• wire wound

Question 7: What type of lamp holders required in a branch circuit has the rating of 20 amp or more?

• brass
• porcelain coated
• heavy duty

NEC Reference: NEC 210.21

Question 8: In wet area a raceway, fittings shall be spaced not less than ...........inch

• 1/8
• 1/4
• 1/2
• 3/4

NEC Reference: NEC 300.6

Question 9: What is the smallest size of conductor for power work as per NEC?

• NO . 14
• NO . 12
• NO . 10
• NO . 8

Question 10: The minimum thickness of the sealing compound of completed seal conduit, except where it is used in cables shall not be less than ............ mm

• 18
• 16
• 14
• 12

NEC Reference: NEC 501.15

Question 11: Working space in rooms allocated for electrical equipment shall not be used for …………………..

• Storage of equipment
• Maintenance
• Testing purpose
• Inspection and service

NEC Reference: NEC 110.26(B)

Question 12: An ohm meter connected across a 120 volts electrical heater shows 7.5 ohms, how much current the heater draws?

• 16 amperes
• 2.13 amperes
• 0.0625 amperes
• 0.47 amperes

Question 13: How many sets of 3 wire feeders shall be permitted to utilize a common neutral?

• 3
• 4
• 5
• 6

NEC Reference: NEC 215.4

Question 14: In which of the following the panel boards must be enclosed?

• Cut boxes
• Cabinets
• All options are correct
• Enclosures designed for the purpose

NEC Reference: NEC 408.38

Question 15: The maximum wattage of incandescent-lamps must not exceed …………… that may be used on medium bus lampholders.

• 200 watts
• 300 watts
• 400 watts
• 500 watts

NEC Reference: NEC 410.103