MASTER ELECTRICIAN EXAM REVIEW QUESTIONS AND CORRECT ANSWERS LATEST UPDATE 2026/2027 GRADED A+ .

1. branch circuit That portion of a wiring system extending beyond the final overcurrent device is called the CORRECT ANSWER 2. Calculated load CORRECT ANSWER The final sum of the computed loads, based on the minimum code requirements, isthe 3. Resistance As compared to #10, a #8 wire of the same Iength has less 4. 0.001 inch One circular mil is the area of a circle whose diameter is CORRECT ANSWER 5. 1,000,000 cm CORRECT ANSWER A round bus-bar one inch in diameter, has a circular mil area of 6. four times as great CORRECT ANSWER Acopperwirewith twice the diameter of anotherwire has a current carrying capacity 7. 10.4 CORRECT ANSWER The specific resistance of copper wire @ 20° C in ohms per circular mil ft. is 8. permit current to flow CORRECT ANSWER Conductance of an electric circuit isthat property that will CORRECT ANSWER 9. 1O ohms CORRECT ANSWER The equivalent value of 0.1 mho is 10. directly proportional to its length CORRECT ANSWER The resistanceof copperwire is 11. Feeder CORRECT ANSWER The portion of a wiring system between a point of distribution and the branch circuit overcurrent device is 12. locking CORRECT ANSWER GFCI protection at a carnival is not required for equipment at circuit if the receptacle is of the type 13. not less than 1 1/4 in. from CORRECT ANSWER Where cables or nonmetallic raceways are installed through in joists, rafters, or wood members;holes shall be bored so that the edge of the hole is the nearest edge -of the wood member. 14. located on a balcony accessible only to qualified persons located in a room only accessible to qualified persons elevated 8 ft or more above floor or other working surface CORRECT ANSWER Toguardlivepartsover50V but less than 600V, equipment is permitted to be 15. 12Ft CORRECT ANSWER Overhead feeder conductors shall have a minimum vertical clearance over residential property and driveways, as well as those commercial areas not subject to truck traflc, where the voltage is limited to 300 volts-to-ground. 16. 36 inches CORRECT ANSWER Where rear access is required to work on de-energized parts on the back of enclosed equipment, a minimum working space of horizontally shall be provided. 17. 50' CORRECT ANSWER What is the maximum run length of a 18AWG fixture wire that is tapped on to a 20 amp branch circuit? 18. power supply failure CORRECT ANSWER When the service disconnecting means is a power-operated switch or circuit breaker, it shall be able to be opened by hand in the event of a 19. 2 in of concrete CORRECT ANSWER Conductors are considered outside a buildings when they are buried under not lessthan 20. 8 CORRECT ANSWER In straight pull, the length of the box shall not be less than. times the trade size of the largest raceway. 21. 18" CORRECT ANSWER At least one receptacle outlet shall be installed within of the top of a show window for each 12 linear feet measured horizontally across its length 22. 1000A CORRECT ANSWER Ground-fault protection of equipment shall be provided fro solidly grounded wye electrical services of more than 150 volts-toground, but not exceeding 600V phase-to..phase for each service disconnecting means rated 23. 18" CORRECT ANSWER Receptacle outlets in floors shall not be counted as part of the required number of receptacle outlets unlesslocated within ofthewall 24. 50V CORRECT ANSWER Exposed live parts of motors and controllers operating at or more between terminals shall be guarded against accidental contact by enclosure or by location 25. 5' CORRECT ANSWER Lighting track shall not be installed less than above the finished floor except' where protected from physical damage or where the track operates at less than 30 V rms, open-circuit voltage 26. 4 CORRECT ANSWER Each general care area patient bed location shall be provided with a minimum of receptacles, which can be single, duplex, or a combination with each duplex counting as two receptacles 27. Combination Range hood/ Mic