T16 – Master Electrician Exam Quiz Welcome to your free T16 - Master Electrician Exam Quiz REQUIRED - Enter your email address to receive a printable copy of your test results. 1. Electrical Metallic Tubing (EMT) must be securely fastened in place within what distance of each outlet box, junction box, or cabinet? 12 inches 18 inches 3 feet 5 feet None 2. What is the minimum required working space depth in front of a 480-volt panelboard if there are exposed live parts on one side and grounded parts on the other side (Condition 2)? 3 feet 3.5 feet 4 feet 5 feet None 3. Which of the following is NOT a standard ampere rating for fuses and inverse time circuit breakers? 70 A 75 A 90 A 110 A None 4. What is the minimum size permitted for overhead copper service-drop conductors? 10 AWG 8 AWG 6 AWG 4 AWG None 5. If a circuit is protected by a 60-ampere overcurrent device, what is the minimum size copper equipment grounding conductor (EGC) required? 12 AWG 10 AWG 8 AWG 6 AWG None 6. What is the required free space volume allowance for each 12 AWG conductor in a junction box? 2.00 cubic inches 2.25 cubic inches 2.50 cubic inches 3.00 cubic inches None 7. What is the maximum number of quarter bends (90-degree bends) allowed in a single run of Electrical Metallic Tubing (EMT) between pull points? Two (180 degrees) Three (270 degrees) Four (360 degrees) Five (450 degrees) None 8. Which of the following is an unacceptable use for flexible cords and cables? Wiring of fixtures Connection of portable lamps Run through holes in walls, structural ceilings, or floors Elevator cables None 9. In a dwelling unit kitchen, a receptacle outlet must be installed at each wall counter space that is at least how wide? 6 inches 12 inches 18 inches 24 inches None 10. When calculating the neutral feeder load, what is the maximum demand factor allowed for the portion of the unbalanced load in excess of 200 amperes? 50% 70% 80% 100% None 11. In commercial repair garages, all 125-volt, single-phase, 15- and 20-ampere receptacles installed in areas where electrical diagnostic equipment or electrical hand tools are to be used must be: Arc-fault circuit interrupter (AFCI) protected Ground-fault circuit interrupter (GFCI) protected Explosion-proof Installed at least 4 feet above the floor None 12. Conductors supplying a single motor used in a continuous duty application shall have an ampacity of not less than what percentage of the motor's full-load current rating? 100% 115% 125% 150% None 13. For one- and two-family dwellings, what is the maximum permitted DC voltage for a solar photovoltaic (PV) system? 240 Volts 480 Volts 600 Volts 1000 Volts None 14. To provide reasonable efficiency of operation, that the maximum total voltage drop on both feeders and branch circuits to the farthest outlet should not exceed: 2% 3% 5% 10% None 15. Arc-Fault Circuit Interrupter (AFCI) protection is required for all 120-volt, single-phase, 10-, 15-, and 20-ampere branch circuits supplying outlets or devices in dwelling unit: Kitchens only Bathrooms only Unfinished basements only Family rooms, dining rooms, living rooms, and bedrooms None 16. When sizing a feeder for a continuous load, the feeder conductors and overcurrent protection must be sized at no less than what percentage of the continuous load? 80% 100% 125% 150% None 17. What is the minimum cover depth required for a direct-buried residential branch circuit rated 120V or less, protected by a maximum 20A GFCI circuit breaker? 6 inches 12 inches 18 inches 24 inches None 18. According to the NEC, a continuous load is a load where the maximum current is expected to continue for a minimum of how many hours? 1 hour 2 hours 3 hours 4 hours None 19. In a dwelling unit living room, receptacles must be installed so that no point measured horizontally along the floor line in any wall space is more than how far from a receptacle outlet? 4 feet 6 feet 8 feet 12 feet None 20. When three or more conductors are installed in a conduit or tubing, the maximum allowable fill capacity is: 31% 40% 53% 60% None Prove you are human Time is Up!
