Journeyman Electrician Practice Test 38

Question 1: What is the maximum ampere rating of a power supply feeder of mobile homes?

• 30 amperes
• 50 amperes
• 20 amperes
• 15 amperes

NEC Reference: NEC 550.10

Question 2: Whether by receptacle or direct connection the outlets supplying pool pump motors shall be provided with …………………………………… protection.

• GFCI
• over current
• over voltage

NEC Reference: NEC 680.21(C)

Question 3: To use as parallel feeder or service what is the minimum size of the conductor?

• 1/0 AWG
• 2/0 AWG
• 8 AWG
• 14 AWG

Question 4: What is the maximum voltage rating of a plug fuse?

• 125 volts
• 240 volts
• 120 volts
• 480 volts

Question 5: What is the minimum height of service drop at the electrical entrance of the building?

• 10 feet
• 8 feet
• 12 feet
• 15 feet

NEC Reference: NEC 230.24(B)

Question 6: Which of the following way the ammeter is connected in a circuit?

• In series with circuit elements
• In parallel with circuit elements

Question 7: The primary of transformer draws 5 amperes at 480 volts. The voltmeter reading at secondary is 240 volts. What is its ammeter reading at secondary?

• 10
• 5
• 2.5
• 20

Question 8: As per NEC central heating equipment can be supplied by a multi-wire branch circuit?

• False
• True

Question 9: How many minimum number of 20-ampere branch circuits are required for dwelling unit countertop receptacles?

• 1
• 2
• 3
• 4

Question 10: A lighting unit is connected on a 20 ampere branch circuit on which a fastened-in place appliance is located. What is the maximum percentage branch circuit rating is permitted on the appliance?

• 80 %
• 70 %
• 50 %
• 60 %

NEC Reference: NEC 210.23(A)(2)