Smittys Two Minute Drill Varied Number 8 Ted
Smitty’s Two Minute Drill Varied Number 8 © Ted Smith 2017 Electrical Experts Consulting sparkyprof@gmail. com
Instructions Be sure to place this presentation in Slide Show Mode if it is not already in that mode before proceeding The purpose of this drill is to help you improve your skill at finding answers to questions using the applicable fire codes and also to help increase your knowledge of the Fire Alarm codes. Each slide will contain a question. The question will remain in the screen for a period of 2 minutes then a notification will sound and the slide will transition to the next slide with the answer. After 15 seconds the next question will appear. During the test do not worry about the correct answers when those slide appear. You will be given an opportunity to review the answers with out the time at the end of the test. Click on the slide to start the timer and begin the test
• This drill is based on your ability to find things quickly in the National Electric Code and your ability to understand the code requirements. NOTE • Be sure to use the Targeting method to find things quickly. • Be sure to the have the Chapter Titles of the NEC chapters memorized as this will speed you up.
REMEMBER 90. 3 Chapters 1 -4 of the NEC are the National Electric Code and the requirements found there apply to all occupancies and installations. Chapters 5 -7 Modify and Amend the Requirements found in Chapters 1 -4 of the NEC Chapter 8 is a Code within a Code and only those things specifically cited in Chapter 8 from Chapters 14 apply to things in Chapter 8
REMEMBER • 90. 3 Lists the Chapter Titles of all the Chapters and also the Code Arrangement • Understanding this and having it memorized will increase your code look up abilities. • Also, use this in conjunction with the Table of Contents and the Parts of Large Articles.
NEC 1. A listed ______ shall be installed in or on all emergency systems switchboards and panelboards. A. Ground-fault circuit interrupter (GFCI) B. Surge-protective device (SPD) C. Arc-fault circuit interrupter (AFCI) D. Leakage-current detector-interrupter (LCDI)
Answer B 700. 8
NEC 2. In general, where a cablebus system is rated 95 amperes, the maximum allowable rating of the overcurrent device that may be used to protect the cablebus is ______. A. 80 amperes B. 90 amperes C. 95 amperes D. 100 amperes
Answer D. 370. 23, 240. 4(B)(1), (2), &(3), T 240. 6(A)
NEC 3. A feeder tap less than 25 feet in length is not required to have overcurrent protection if the ampacity of the tap conductors is not less than _________of the rating of the overcurrent device protecting the feeder conductors. A. One-half B. One-fourth C. One-third D. 75 percent
Answer C. 240. 21(B)&(B)(2)(1)
NEC 4. A flexible metal conduit to be installed will be contain three (3) size 400 kcmil THWN copper conductors and one (1) size 250 kcmil copper conductor. If the FMC is more than 24 inches long, what is the minimum size FMC permitted for the installation? A. 3 inches B. 3 ½ inches C. 2 ½ inches D. 4 inches
Answer A. Chapter 9, Table 5 and Table 4
NEC 5. In general, which of the following must be provided at a patient bed location used for general care (Category 2) spaces in a hospital? A. One branch circuit from the normal system B. One branch circuit from the critical branch of the essential electrical system C. Hospital grade receptacles D. All of the above
Answer D 517. 18(A)&(B)
NEC 6. When an electrical service is required to have a grounded conductor present, what is the smallest grounded conductor permitted for an electric service using size 1000 kcmil copper ungrounded conductors installed in a single raceway? A. 3/0 copper B. 2/0 copper C. 1/0 copper D. 4/0 copper
Answer B 250. 24(C)(1), T 250. 102(C)(1)
NEC 7. Determine the minimum number of 20 ampere, 277 volt, general lighting branch circuits required for a 150, 000 square foot retail department store where the actual connected load is 400 k. VA. Assume the circuit breakers of this size are not rated for continuous use. A. 72 B. 82 C. 91 D. 102
Answer C 210. 19(A)(1)(a) and 210. 11(A)
NEC 8. Where a 2 gang box contains two (2) single pole switches, unless the box is equipped with a permanently installed barrier, voltage between the switches shall not be in excess of _______ volts. • • A. 120 volts B. 300 volts C. 480 volts D. 240 volts
Answer B 404. 8(B)
NEC 9. Where electrical metallic tubing (EMT) is installed under metal-corrugated sheet roofing decking, a clearance of least ____ must be maintained between the top of the tubing and the surface of the roof decking. A. 1 inch B. 1 ¼ inch C. 1 ½ inch D. 1 ¾ inch
Answer C 300. 4(E)
NEC 10. Fluorescent luminaires installed more than _______ above the floor in patient care areas in a hospital, shall not be required to be grounded by an insulated equipment grounding conductor. A. 6 feet B. 6 ½ feet C. 7 feet D. 7 ½ feet
Answer D 517. 13(B), Exception 3
NEC 11. In a park trailer, the sheath of nonmetallicsheathed cable and Type AC cable, shall be _______. A. Continuous between outlet boxes and other enclosures B. Be considered to be the grounded conductor of the circuit C. Be considered to be the grounding electrode conductor of the circuit D. None of the above
Answer A 552. 48(F)
NEC 12. Open conductors of not over 1000 volts nominal shall have a vertical clearance of not less than _____ feet and a horizontal clearance of not less than _______ feet in all areas subject to recreational vehicle movement. A. 10, 5 B. 12, 6 C. 18, 3 D. 24, 6
Answer C 551. 79
NEC 13. A three phase, delta-wye connected transformer has a load of 125 amperes on the primary side line. This transformer will require a maximum sized over current protection of ________ amperes. Assume primary protection only will be provided. A. 150 A B. 175 A C. 125 A D. 100 A
Answer T 450. 3(B), Note 1, T 240. 6(A) B 125 x 1. 25= 156. 25 the next standard size up is 175 A
NEC 14. The minimum wire bending space at fixed, 1000 -volt and below terminals of a transformer line and load connections shall be as required in ________. Wire space for pigtail connections shall conform to ________. A. 314. 21, T 314. 7 B. 312. 6, T 314. 16(B) C. 220. 46, T 300. 8 D. 314. 28, T 314. 16(B)
Answer B 450. 12
NEC 15. Which of the following is NOT required on a transformer nameplate? A. Rated k. VA B. Frequency C. Primary and Secondary Voltage D. Impedance of transformers 20 k. VA or smaller
Answer D 450. 11(5)
END of QUIZ. THE TIME WILL STOP NOW. PLEASE CLICK ON THE SLIDE TO CONTINUE WITHOUT THE TIMER AND REVIEW EACH QUESTION.
NEC 1. A listed ______ shall be installed in or on all emergency systems switchboards and panelboards. A. Ground-fault circuit interrupter (GFCI) B. Surge-protective device (SPD) C. Arc-fault circuit interrupter (AFCI) D. Leakage-current detector-interrupter (LCDI)
Answer B 700. 8
NEC 2. In general, where a cablebus system is rated 95 amperes, the maximum allowable rating of the overcurrent device that may be used to protect the cablebus is ______. A. 80 amperes B. 90 amperes C. 95 amperes D. 100 amperes
Answer D. 370. 23, 240. 4(B)(1), (2), &(3), T 240. 6(A)
NEC 3. A feeder tap less than 25 feet in length is not required to have overcurrent protection if the ampacity of the tap conductors is not less than _________of the rating of the overcurrent device protecting the feeder conductors. A. One-half B. One-fourth C. One-third D. 75 percent
Answer C. 240. 21(B)&(B)(2)(1)
NEC 4. A flexible metal conduit to be installed will be contain three (3) size 400 kcmil THWN copper conductors and one (1) size 250 kcmil copper conductor. If the FMC is more than 24 inches long, what is the minimum size FMC permitted for the installation? A. 3 inches B. 3 ½ inches C. 2 ½ inches D. 4 inches
Answer A. Chapter 9, Table 5 and Table 4
NEC 5. In general, which of the following must be provided at a patient bed location used for general care (Category 2) spaces in a hospital? A. One branch circuit from the normal system B. One branch circuit from the critical branch of the essential electrical system C. Hospital grade receptacles D. All of the above
Answer D 517. 18(A)&(B)
NEC 6. When an electrical service is required to have a grounded conductor present, what is the smallest grounded conductor permitted for an electric service using size 1000 kcmil copper ungrounded conductors installed in a single raceway? A. 3/0 copper B. 2/0 copper C. 1/0 copper D. 4/0 copper
Answer B 250. 24(C)(1), T 250. 102(C)(1)
NEC 7. Determine the minimum number of 20 ampere, 277 volt, general lighting branch circuits required for a 150, 000 square foot retail department store where the actual connected load is 400 k. VA. Assume the circuit breakers of this size are not rated for continuous use. A. 72 B. 82 C. 91 D. 102
Answer C 210. 19(A)(1)(a) and 210. 11(A)
NEC 8. Where a 2 gang box contains two (2) single pole switches, unless the box is equipped with a permanently installed barrier, voltage between the switches shall not be in excess of _______ volts. • • A. 120 volts B. 300 volts C. 480 volts D. 240 volts
Answer B 404. 8(B)
NEC 9. Where electrical metallic tubing (EMT) is installed under metal-corrugated sheet roofing decking, a clearance of least ____ must be maintained between the top of the tubing and the surface of the roof decking. A. 1 inch B. 1 ¼ inch C. 1 ½ inch D. 1 ¾ inch
Answer C 300. 4(E)
NEC 10. Fluorescent luminaires installed more than _______ above the floor in patient care areas in a hospital, shall not be required to be grounded by an insulated equipment grounding conductor. A. 6 feet B. 6 ½ feet C. 7 feet D. 7 ½ feet
Answer D 517. 13(B), Exception 3
NEC 11. In a park trailer, the sheath of nonmetallicsheathed cable and Type AC cable, shall be _______. A. Continuous between outlet boxes and other enclosures B. Be considered to be the grounded conductor of the circuit C. Be considered to be the grounding electrode conductor of the circuit D. None of the above
Answer A 552. 48(F)
NEC 12. Open conductors of not over 1000 volts nominal shall have a vertical clearance of not less than _____ feet and a horizontal clearance of not less than _______ feet in all areas subject to recreational vehicle movement. A. 10, 5 B. 12, 6 C. 18, 3 D. 24, 6
Answer C 551. 79
NEC 13. A three phase, delta-wye connected transformer has a load of 125 amperes on the primary side line. This transformer will require a maximum sized over current protection of ________ amperes. Assume primary protection only will be provided. A. 150 A B. 175 A C. 125 A D. 100 A
Answer T 450. 3(B), Note 1, T 240. 6(A) B 125 x 1. 25= 156. 25 the next standard size up is 175 A
NEC 14. The minimum wire bending space at fixed, 1000 -volt and below terminals of a transformer line and load connections shall be as required in ________. Wire space for pigtail connections shall conform to ________. A. 314. 21, T 314. 7 B. 312. 6, T 314. 16(B) C. 220. 46, T 300. 8 D. 314. 28, T 314. 16(B)
Answer B 450. 12
NEC 15. Which of the following is NOT required on a transformer nameplate? A. Rated k. VA B. Frequency C. Primary and Secondary Voltage D. Impedance of transformers 20 k. VA or smaller
Answer D 450. 11(5)
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