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3. Two electricians are discussing bonding circuits. Electrician A that says t bond an isolated ground circuit

more, you can add reducing washers to improve the low impedance path. Electrician B says that in hazardous a location, the bonding can use a bonding bushing with a jumper. Which of the following statements is correct? 

 A. Neither electrician is correct. 

B.Only Electrician A is correct. 

C. Both electricians are correct 

D. Only Electrician B is correct

 

4. The NEC states that a grounding connection shall not be made to any grounded circuit conductor on the (blank) of the service disconnecting means except as permitted for separately derived systems or separate buildings.

A. supply 

B. power 

C. line 

D. load 

 

5. Which of the following raceways is permitted for installation in cinder fill without additional protection? 

A. EMT 

B. RMC 

C. IMMC 

D. PVC

 

6. What minimum-size, 41/16" square box is required for four 12 AWG, four 10 AWG, and four 8 AWG conductors spliced in this box? 

A. 4146 x 2 4 

B.416x2 

C.41/16x 11 

D. 41/x 1

 

7. Which of the following is not an electrode permitted for grounding per the NEC? 

A. Aluminum rod or pipe 

B. Stainless steel rod or pipe 

C. Galvanized steel rod or pipe 

D. Copper rod or pipe

 

8. Which of the following is not an acceptable condition for an installation using FMC (Greenfield) raceway? 

A. With angle connectors behind drywall 

B. With supports 8" on either side of each box 

C. With three 90 bends between two pull points

D. With supports every 34 feet

 

9. Where underground cables and conductors emerge from underground, they shall be protected by enclosures or raceways to a point feet above finished grade 

A. 3 

B.8 

C. 4 

D. 6

 

10. When No. 8 AWG copper conductors are contained in a vertical raceway, the raceway must be supported so that the interval between supports does not exceed feet 

A. 100 

B. 120 P 

C. 60 

D. 135

 

11. What is the required bend radius for service entrance cable, 3-conductor, 3/0 AWNG, approximately 1 inch in diameter? 

A. 1 

B. 3 

C.5 

D. 15

 

12. Cabled installed through bored holes in wooden wall studs is a common wiring technique. If the cable is less than 1 1/4 from the edge of the stud, you can install steel plates to protect the cable and meet NEC requirements. According to the NEC what is the minimum thickness for these plates?

 A. 1/8" 

B. 3/16" 

C.1/4"  

D. 1/16"

 

13. What is the minimum length of a pull box connected to three, 2-inch diameter raceways? 

A. 48 inches 

B. 16 inches 

C. 32 inches 

D. 12 inches

14. How AWG does the many 14 conductors 4 x 2 1/8 metal box? a x square 

A. 15 

B. 10 

C.21

D. 9

 

15. Two electricians discussing are conduit body methods. Electrician A that because the says indicates its capacity in cubic inches, splices be can used that the within the conduit body. Electrician B says is conductors the must be installed before raceway complete. Which of the following statements is correct? 

A. Neither electrician is correct 

B. Only Electrician A is correct. 

C. Both electricians are correct 

D. Only Electrician B is correct

 

16. Two allowed to electrode is that 6" of 8' rod pipe or an says that a Electrician B says the finished grade. extend above rod constructed fromn copper electrode grounding made the and 100" long is acceptable per that is " in diameter the following statements is correct? NEC. Which of is correct 

A. Neither electrician correct 

B. Only ElectriCian B is are 

C. Both electricians correct 

D. Only Electrician A is correct

 

17. Two electricians discussing wiring are rooms. floors in information technology equipment raised floor requires Electrician A that wiring under the says fire-resistant walls, floors, and ceilings between other occupancies. Electrician B that the must employ says room disconnecting that all removes power to all a means is equipment in the Which of the following statements room. correct? 

A. Only Electrician B is correct 

B. Neither electrician is correct 

C. Both electricians are correct 

D. Only Electrician A is correct

 

18. Where resistance to ground of exceeds a single made-electrode 25 ohms, 

A. additional electrodes must be added until the resistance ground to is lower than 25 ohms 

B.no additional electrodes are required 

C. the electrode can be omitted 

D.one additional electrode must be added

 

19. A vertical requires intermediate cable raceway supports. If the raceway carries 3/0 AWG copper conductors, at what distance in meters will the supports be required?

A. 80 

B. 30 

C. 60 

D. 25

 

 20. Which of the following is an acceptable installation for the use of Type NM (Romex) cable? 

A. Wet/damp ocations 

B. Senvice entrance cable 

C. Detached garage of two-family residenceD.Embedded in cencrete

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