Journeyman Electrician Practice Test 28

Question 1: <span style="font-size: 14pt;">The FMC cable shall be supported and secured at intervals less than ......................</span>

• less than 3 1/2 inches
• less than 4 1/2 inches
• less than 5 1/2 inches
• less than 6 1/2 inches

NEC Reference: NEC 348.30(A)

Question 2: Which of the following is the minimum clear workspace that shall be provided to electrical equipment rated at 601 volts that has exposed live parts on its both sides?

• 3 feet
• 4 feet
• 5 feet
• 6 feet

NEC Reference: NEC 110.34

Question 3: The ampacity of the branch circuit conductors of 600 volts normal or more shall not be less than 150 % of rated designated load of the utilization equipment.

• True
• False

NEC Reference: NEC 210.19(B)(1)

Question 4: The grounded conductor ampacity of  a 3 -phase 3-wire delta connected service shall be 50% of that ungrounded conductor?

• True
• False

NEC Reference: NEC 250.24(5)(c)(3)

Question 5: The over current device  that feeds the marina shall have a ground fault protection not exceeding ......................

• 100 mA
• 150 mA
• 120 mA
• 80 mA

NEC Reference: NEC 555.3

Question 6: Which of the following is the minimum size of copper grounding conductor that shall be used in marina?

• No 12 AWG
• No 8 AWG
• No 10 AWG
• No 6 AWG

NEC Reference: NEC 550.15

Question 7: The resistance of the conductor is 0.5 ohms and the ammeter in series with the conductor indicates 4 amp. What id the power loss in the conductor?

• 8 watts
• 2 watts
• 4 watts
• 32 watts

Question 8: The lighting load of the dwelling unit is 8000 watts, what is the computed total load of service feeder?

• 4750 watts
• 8000 watts
• 6000 watts
• 5550 watts

NEC Reference: NEC 220.42

Question 9: If four conductors are placed in a raceway, which of the following is the maximum allowable load current of each conductor?

• 80 % of ampere rating of the conductor
• maximum ampere rating of the conductor
• 70 % of ampere rating of the conductor
• 60 % of ampere rating of the conductor

NEC Reference: NEC 310.15(B)(3)

Question 10: Which of the following law states that opposite poles of an element attract each other?

• coulombs law
• joules law
• Flemming law