Two Minute Drill Number 23- Residential Improving your skill in code Look Up Increasing Speed Drill Copyright 2008 Ted "Smitty" Smith

Directions Left click on the presentation ICON located at the bottom of the slide directory to the left of the this slide. Each slide will transition to the correct answer automatically in 2:00 minutes. The correct answer will transition in 15 seconds. As you progress through the slide show, the time for each question will be reduced. Write down the correct answer to each question and the code reference as it is displayed so you can review them later. This presentation is mostly residential installation.. We have included a few other categories just to help keep you sharp. Copyright 2008 Ted "Smitty" Smith

1. What is the MAXIMUM period allowed for temporary outdoor Christmas decoration lighting for residences? a. 30 days b. 60 days c. 90 days d. 4 months Copyright 2008 Ted "Smitty" Smith

1. c590.3(B) Copyright 2008 Ted "Smitty" Smith

2. When doing box fill calculations, a fixture stud in a ceiling mounted outlet box is an equivalent to _____ conductor(s). a. zero b. one c. two d. three Copyright 2008 Ted "Smitty" Smith

2. b314.16(B)(3) Copyright 2008 Ted "Smitty" Smith

3. A branch-circuit supplying more than one electric baseboard heater in a residential occupancy shall be rated a MAXIMUM of _____. a. 15 amperes b. 20 amperes c. 30 amperes d. 50 amperes Copyright 2008 Ted "Smitty" Smith

3. c424.3(A) Copyright 2008 Ted "Smitty" Smith

4. Disregarding exceptions, when installing electrical metallic tubing (EMT), the run of tubing is required to be securely fastened at LEAST every _____. a. 6 feet b. 10 feet c. 15 feet d. 20 feet Copyright 2008 Ted "Smitty" Smith

4. b358.30(A) Copyright 2008 Ted "Smitty" Smith

5. When calculating the demand load for a one- family dwelling, what total MINIMUM volt- amperes (VA) must be included in the calculations for the small-appliance and laundry circuit loads? a VA b VA c VA d VA Copyright 2008 Ted "Smitty" Smith

5. a210.11(C)(1) & (2) (A) & (B) 2- small appliance 1500VA ea = 3000VA 1- laundry 1500VA ea = 1500VA Total = 4500VA Copyright 2008 Ted "Smitty" Smith

6. The NEC® mandates the ampacity of UF cable shall be that of _____ conductors. a. 60ºC rated b. 75ºC rated c. 86ºF rated d. 90ºC rated Copyright 2008 Ted "Smitty" Smith

6. a Copyright 2008 Ted "Smitty" Smith

7. The front edge of a switch box installed in a wall constructed of wood, shall be _____ from the surface of the wall. a. flush with or projected out b. set back a maximum of ¼ inch c. set back a maximum of ½ inch d. set back a maximum of 3/8 inch Copyright 2008 Ted "Smitty" Smith

7. a Copyright 2008 Ted "Smitty" Smith

8. For dwelling units, where 125 volt, single- phase, 15 and 20 ampere receptacle outlets are installed within at LEAST _____ of the outside edge of a sink in a laundry room, GFCI protection must be provided. a. 4 feet b. 6 feet c. 8 feet d. 10 feet Copyright 2008 Ted "Smitty" Smith

8. b210.8(A)(7) Copyright 2008 Ted "Smitty" Smith

9. For dwelling units, a branch-circuit supplying _____ receptacles outlets is permitted to also supply receptacle outlets in an attached garage. a. outdoor b. bathroom c. laundry room d. kitchen small-appliance Copyright 2008 Ted "Smitty" Smith

9. a210.52(B)(2) (C)(2) & (3) Copyright 2008 Ted "Smitty" Smith

10. A metal underground water pipe may serve as a grounding electrode if it is in direct contact with the earth for at LEAST ______feet or more. a. 6 b. 8 c. 10 d. 12 Copyright 2008 Ted "Smitty" Smith

10. c250.52(A)(1) Copyright 2008 Ted "Smitty" Smith

11. What is the MAXIMUM allowable cord length for the cord supplying a cord-and-plug connected dishwasher installed under a kitchen counter in a dwelling unit? a. 1 ½ feet b. 2 feet c. 3 feet d. 4 feet Copyright 2008 Ted "Smitty" Smith

11. d422.16(B)(2)(2) Copyright 2008 Ted "Smitty" Smith

12. What is the MINIMUM size copper SE cable with type THHW insulation that may be used as ungrounded, service-entrance phase conductors for a 150 ampere-rated, 120/240-volt, single- phase, residential service? a. 1/0 AWG b. 1 AWG c. 2 AWG d. 3 AWG Copyright 2008 Ted "Smitty" Smith

12. bTbl (B)(6) Copyright 2008 Ted "Smitty" Smith

13. For outlet boxes designed to support ceiling- suspended (paddle) fans that weigh more than ______ pounds, the required marking shall include the maximum weight to be supported. a. 20 b. 30 c. 35 d. 70 Copyright 2008 Ted "Smitty" Smith

13. c314.27(D) Copyright 2008 Ted "Smitty" Smith

14. A connection to a driven or buried grounding electrode shall _____. a. be accessible b. not be required to be accessible c. not be permitted to be buried d. be visible Copyright 2008 Ted "Smitty" Smith

14. b250.68(A), Ex. 1 Copyright 2008 Ted "Smitty" Smith

15. What is the MAXIMUM allowable standard size circuit breaker rating that may be used to protect a size 8 AWG copper NM-B cable supplying an electric range? a. 30 amperes b. 40 amperes c. 50 amperes d. 60 amperes Copyright 2008 Ted "Smitty" Smith

15. b Tbl Copyright 2008 Ted "Smitty" Smith

16. The MAXIMUM number of size 10 AWG conductors permitted in a 4 inch X 1 ¼ inch octagon metal junction box is _____. a. two b. four c. five d. six Copyright 2008 Ted "Smitty" Smith

16. cTbl (A) Copyright 2008 Ted "Smitty" Smith

17. Determine the MINIMUM number of 15-ampere, 120-volt general lighting branch-circuits required for a dwelling that has 2,600 square feet of habitable space. a. three b. four c. five d. six Copyright 2008 Ted "Smitty" Smith

17. c Tbl Sq. Ft. X 3VA (total lighting VA of house) 120 volts X 15 amperes = 1800 VA (one circuit) 7800 VA (house) /1800 VA (one circuit) =4.3 = 5 circuits Copyright 2008 Ted "Smitty" Smith

18. When calculating the total load on a dwelling unit, how many VA per square feet must be included for the general purpose receptacle outlets? a. none b. one c. two d. three Copyright 2008 Ted "Smitty" Smith

18. a220.14(J)(1) Copyright 2008 Ted "Smitty" Smith

19. When calculating the total load for a dwelling unit, what is the MINIMUM load, in VA, that must be added for the two required small appliance branch-circuits? a VA b VA c VA d VA Copyright 2008 Ted "Smitty" Smith

19. d220.52(A) 1500 VA X 2 circuits required = 3000 VA Copyright 2008 Ted "Smitty" Smith

20. It shall be permissible to apply a demand factor of _____ percent to the nameplate-rating load of four or more fastened in place electric water heaters in a multi-family dwelling unit. a. 50 b. 75 c. 80 d. 90 Copyright 2008 Ted "Smitty" Smith

20. b Copyright 2008 Ted "Smitty" Smith

End of Drill Click the left mouse button to advance back to the first question. Each question will now be repeated without the timer to give you a chance to review it and find the answer. Clicking the left mouse button will advance the slide to the answer and the code reference. Copyright 2008 Ted "Smitty" Smith

1. What is the MAXIMUM period allowed for temporary outdoor Christmas decoration lighting for residences? a. 30 days b. 60 days c. 90 days d. 4 months Copyright 2008 Ted "Smitty" Smith

1. c590.3(B) Copyright 2008 Ted "Smitty" Smith

2. When doing box fill calculations, a fixture stud in a ceiling mounted outlet box is an equivalent to _____ conductor(s). a. zero b. one c. two d. three Copyright 2008 Ted "Smitty" Smith

2. b314.16(B)(3) Copyright 2008 Ted "Smitty" Smith

3. A branch-circuit supplying more than one electric baseboard heater in a residential occupancy shall be rated a MAXIMUM of _____. a. 15 amperes b. 20 amperes c. 30 amperes d. 50 amperes Copyright 2008 Ted "Smitty" Smith

3. c424.3(A) Copyright 2008 Ted "Smitty" Smith

4. Disregarding exceptions, when installing electrical metallic tubing (EMT), the run of tubing is required to be securely fastened at LEAST every _____. a. 6 feet b. 10 feet c. 15 feet d. 20 feet Copyright 2008 Ted "Smitty" Smith

4. b358.30(A) Copyright 2008 Ted "Smitty" Smith

5. When calculating the demand load for a one- family dwelling, what total MINIMUM volt- amperes (VA) must be included in the calculations for the small-appliance and laundry circuit loads? a VA b VA c VA d VA Copyright 2008 Ted "Smitty" Smith

5. a210.11(C)(1) & (2) (A) & (B) 2- small appliance 1500VA ea = 3000VA 1- laundry 1500VA ea = 1500VA Total = 4500VA Copyright 2008 Ted "Smitty" Smith

6. The NEC® mandates the ampacity of UF cable shall be that of _____ conductors. a. 60ºC rated b. 75ºC rated c. 86ºF rated d. 90ºC rated Copyright 2008 Ted "Smitty" Smith

6. a Copyright 2008 Ted "Smitty" Smith

7. The front edge of a switch box installed in a wall constructed of wood, shall be _____ from the surface of the wall. a. flush with or projected out b. set back a maximum of ¼ inch c. set back a maximum of ½ inch d. set back a maximum of 3/8 inch Copyright 2008 Ted "Smitty" Smith

7. a Copyright 2008 Ted "Smitty" Smith

8. For dwelling units, where 125 volt, single- phase, 15 and 20 ampere receptacle outlets are installed within at LEAST _____ of the outside edge of a sink in a laundry room, GFCI protection must be provided. a. 4 feet b. 6 feet c. 8 feet d. 10 feet Copyright 2008 Ted "Smitty" Smith

8. b210.8(A)(7) Copyright 2008 Ted "Smitty" Smith

9. For dwelling units, a branch-circuit supplying _____ receptacles outlets is permitted to also supply receptacle outlets in an attached garage. a. outdoor b. bathroom c. laundry room d. kitchen small-appliance Copyright 2008 Ted "Smitty" Smith

9. a210.52(B)(2) (C)(2) & (3) Copyright 2008 Ted "Smitty" Smith

10. A metal underground water pipe may serve as a grounding electrode if it is in direct contact with the earth for at LEAST ______feet or more. a. 6 b. 8 c. 10 d. 12 Copyright 2008 Ted "Smitty" Smith

10. c250.52(A)(1) Copyright 2008 Ted "Smitty" Smith

11. What is the MAXIMUM allowable cord length for the cord supplying a cord-and-plug connected dishwasher installed under a kitchen counter in a dwelling unit? a. 1 ½ feet b. 2 feet c. 3 feet d. 4 feet Copyright 2008 Ted "Smitty" Smith

11. d422.16(B)(2)(2) Copyright 2008 Ted "Smitty" Smith

12. What is the MINIMUM size copper SE cable with type THHW insulation that may be used as ungrounded, service-entrance phase conductors for a 150 ampere-rated, 120/240-volt, single- phase, residential service? a. 1/0 AWG b. 1 AWG c. 2 AWG d. 3 AWG Copyright 2008 Ted "Smitty" Smith

12. bTbl (B)(6) Copyright 2008 Ted "Smitty" Smith

13. For outlet boxes designed to support ceiling- suspended (paddle) fans that weigh more than ______ pounds, the required marking shall include the maximum weight to be supported. a. 20 b. 30 c. 35 d. 70 Copyright 2008 Ted "Smitty" Smith

13. c314.27(D) Copyright 2008 Ted "Smitty" Smith

14. A connection to a driven or buried grounding electrode shall _____. a. be accessible b. not be required to be accessible c. not be permitted to be buried d. be visible Copyright 2008 Ted "Smitty" Smith

14. b250.68(A), Ex. 1 Copyright 2008 Ted "Smitty" Smith

15. What is the MAXIMUM allowable standard size circuit breaker rating that may be used to protect a size 8 AWG copper NM-B cable supplying an electric range? a. 30 amperes b. 40 amperes c. 50 amperes d. 60 amperes Copyright 2008 Ted "Smitty" Smith

15. b Tbl Copyright 2008 Ted "Smitty" Smith

16. The MAXIMUM number of size 10 AWG conductors permitted in a 4 inch X 1 ¼ inch octagon metal junction box is _____. a. two b. four c. five d. six Copyright 2008 Ted "Smitty" Smith

16. cTbl (A) Copyright 2008 Ted "Smitty" Smith

17. Determine the MINIMUM number of 15-ampere, 120-volt general lighting branch-circuits required for a dwelling that has 2,600 square feet of habitable space. a. three b. four c. five d. six Copyright 2008 Ted "Smitty" Smith

17. c Tbl Sq. Ft. X 3VA (total lighting VA of house) 120 volts X 15 amperes = 1800 VA (one circuit) 7800 VA (house) /1800 VA (one circuit) =4.3 = 5 circuits Copyright 2008 Ted "Smitty" Smith

18. When calculating the total load on a dwelling unit, how many VA per square feet must be included for the general purpose receptacle outlets? a. none b. one c. two d. three Copyright 2008 Ted "Smitty" Smith

18. a220.14(J)(1) Copyright 2008 Ted "Smitty" Smith

19. When calculating the total load for a dwelling unit, what is the MINIMUM load, in VA, that must be added for the two required small appliance branch-circuits? a VA b VA c VA d VA Copyright 2008 Ted "Smitty" Smith

19. d220.52(A) 1500 VA X 2 circuits required = 3000 VA Copyright 2008 Ted "Smitty" Smith

20. It shall be permissible to apply a demand factor of _____ percent to the nameplate-rating load of four or more fastened in place electric water heaters in a multi-family dwelling unit. a. 50 b. 75 c. 80 d. 90 Copyright 2008 Ted "Smitty" Smith

20. b Copyright 2008 Ted "Smitty" Smith