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Practice Code Look Up Smitty’s Speed Drills 2008 NEC Copyright 208 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 5 seconds. • Do not worry about writing down the correct answer for now. You will have the opportunity to do that at the end of the two minute drill • Good luck • Some of the the slides will transistion faster than others as some timers are intentionally set to less than 2 minutes. Copyright 2005 Ted "Smitty" Smith Equipment Use • A luminaire is installed in a clothes closet and the nearest point of storage space is located 8 inches from the luminaire. The luminaire is a recessed incandescent type. Is this a legal application? Copyright 2005 Ted "Smitty" Smith Equipment Use • Yes 6 Inches required Copyright 2005 Ted "Smitty" Smith 410.36(C)(3) Grounding • The earth shall not be considered as an effective ground fault current path. True or False Copyright 2005 Ted "Smitty" Smith Grounding • True 250.4(A)(5) Copyright 2005 Ted "Smitty" Smith Grounding • An equipment grounding conductor is connected to a disconnect enclosure by means of a mechanical lug. The lug is connected to the enclose by means of a thread forming machine screw. Is this an acceptable installation? Copyright 2005 Ted "Smitty" Smith Grounding • Yes 250.8(A)(6) Copyright 2005 Ted "Smitty" Smith Raceways • A 10 foot, unbroken piece of electrical nonmetallic tubing is fished into an existing wall to feed a new junction box. No supports are placed on the electrical nonmetallic tubing inside the wall or within three feet of the junction box. Is this an acceptable installaion? Copyright 2005 Ted "Smitty" Smith Raceways • Yes 362.30(A) Exception 3 Copyright 2005 Ted "Smitty" Smith Equipment Use • All convenience receptacles in a home including the kitchen counter top receptacles shall be tamper resistant type. True or False Copyright 2005 Ted "Smitty" Smith Equipment Use • True 406.11 Copyright 2005 Ted "Smitty" Smith Equipment Use • Wiring installed in aircraft hangars in unclassified locations that are adjacent to areas in which flammable liquids or vapors are not likely to be released, such as stock rooms or electrical control rooms, which are adequately ventilated and are effectively cut off from the hangar itself by walls or partitions, shall be permitted to be of any suitable type wiring method recognized by chapter 3 of the NEC. True or False Copyright 2005 Ted "Smitty" Smith Equipment Use • True Exception to 513.7 Copyright 2005 Ted "Smitty" Smith Special Occupancies • A cow milking station building has a 2” concrete floor with metal rails separating each milking station. Each milking station has an electric milking unit including disconnect mounted to the separating rail. Is an equipotential plane required in the floor of this building? Copyright 2005 Ted "Smitty" Smith Special Occupancies • Yes 547.10(A)(1) Copyright 2005 Ted "Smitty" Smith Special Occupancies • Several receptacles are installed in a health care facility. The receptacles are fed from the emergency system. Each receptacle is hospital grade with the correct ratings required. The receptacles are placed on the same wall as receptacles fed from the normal system. All receptacles are tamper resistant, ivory in color with ivory nameplates. Is this installation acceptable? Copyright 2005 Ted "Smitty" Smith Special Occupancies • No 517.30 (E) • The emergency system receptacles must be identified with a distinctive color or marking. Copyright 2005 Ted "Smitty" Smith Services • Type SE cable when used as service cables shall be permitted to be formed in a gooseneck patern and used without a service head if it is taped with a _______________ weather resistant thermoplastic. – A. black or red – B. self sealing – C. listed – D. approved Copyright 2005 Ted "Smitty" Smith Services • Self sealing 230.54(B) Copyright 2005 Ted "Smitty" Smith Services • Raceways that carry service-conductors that are embedded in masonry shall be __________. Copyright 2005 Ted "Smitty" Smith Services • Arranged to drain 230.53 Copyright 2005 Ted "Smitty" Smith Services • The disconnecting means for power monitoring equipment, surge protective devices, control circuit of the ground fault protection system, and ___________ service disconnecting means shall not be considered as a switch for the purpose of determining the maximum number of switches for the service disconnecting means. – A. secondary – B. power operable – C. manually operated – D. None of the above Copyright 2005 Ted "Smitty" Smith Services • Power operable 230.71(A) Copyright 2005 Ted "Smitty" Smith Special Occupancies • A site isolating device shall be installed at the distribution point where __________ or more agricultural buildings or structures are supplied from the distribution point. – A. 1 – B. 3 – C. 5 – D. None of the above Copyright 2005 Ted "Smitty" Smith Special Occupancies • None of the above 547.9(A)(1) • Two or more is the correct answer Copyright 2005 Ted "Smitty" Smith Special Occupancies • A switch that is located outside of the patient care vicinity in a patient care area of a healt care facility shall be permitted to be installed without an insulated equipment grounding conductor. – True – False Copyright 2005 Ted "Smitty" Smith Special Occupancies • True 517.13(B) Exception 2 Copyright 2005 Ted "Smitty" Smith Special Occupancies • A site isolating device used in an agricultural facility shall be permanently marked to identify it as a site isolating device. This marking shall be located _______________ or immediately adjacent thereto. – A. at the main service entrance – B. inside the disconnecting cover – C. on the operating handle – D. on the face of the disconnecting means Copyright 2005 Ted "Smitty" Smith Special Occupancies • On the operating handle 547.9(A)(10) Copyright 2005 Ted "Smitty" Smith Calculations • A conductor passing through a junction box with a loop length of ______________ shall be counted twice for box fill calculations. Copyright 2005 Ted "Smitty" Smith Calculations • Twice the minimum length required by Article 300.14 • 314.16(B)(1) Copyright 2005 Ted "Smitty" Smith Equipment Use • A 1/2" knockout will be made in a fluorescent light fixture that will be mounted over a junction box. The light fixture will be mounted with toggle bolts. A 1/2" chase nipple will be installed so that the conductors from the box can be brought into the fixture for make up. Is this is legal installation according to the NEC? Copyright 2005 Ted "Smitty" Smith Equipment Use • No 410.14(A) Copyright 2005 Ted "Smitty" Smith Equipment Use • Is thermal protection required for the ballast of a fluorescent exit light? Copyright 2005 Ted "Smitty" Smith Equipment Use • No 410.73(E)(3) Copyright 2005 Ted "Smitty" Smith Feeders and Branch Circuits • The size of a feeder, grounded conductor shall not be smaller than required by_________, except that _________ shall not apply where grounded conductors are run in parallel. Copyright 2005 Ted "Smitty" Smith Feeders and Branch Circuits • 250.122, 250.122(F) 215.2(A) Copyright 2005 Ted "Smitty" Smith Feeders and Branch Circuits • Where the premises wiring system has branch circuits supplied from more than one nominal voltage system, each ungrounded conductor of a branch circuit, where accessible, shall be identified by __________. Copyright 2005 Ted "Smitty" Smith Feeders and Branch Circuits • System 210.5(C) Copyright 2005 Ted "Smitty" Smith Equipment Use • The size of the industrial control panel supply conductor shall have an ampacity not less than ________ percent of the full load current of all resistance heating loads plus 125% of the full load current rating of the highest rated motor plus the sum of the full load current ratings of all connected motors and apparatus based on their duty cycle that may be in operation at the same time. Copyright 2005 Ted "Smitty" Smith Equipment Use • 125% 409.20 Copyright 2005 Ted "Smitty" Smith Equipment Use • A ballast in a fluorescent luminaire that is used for egress lighting and energized only during a failure of the normal supply shall not have ________________. Copyright 2005 Ted "Smitty" Smith Equipment Use • Thermal Protection 410.73(E)(4) Copyright 2005 Ted "Smitty" Smith Feeders and Branch Circuits • A load not less than ___________ volt amperes shall be included for each 2-wire laundry branch circuit installed as required by 210.11(C)(2). Copyright 2005 Ted "Smitty" Smith Feeders and Branch Circuits • 1500 220.52(B) Copyright 2005 Ted "Smitty" Smith Feeders and Branch Circuits • An alternate load calculation for determine if the existing service or feeder is of sufficient capacity to serve additional loads in an existing dwelling unit is found in __________________. Copyright 2005 Ted "Smitty" Smith Feeders and Branch Circuits • 220.83 220.83 Copyright 2005 Ted "Smitty" Smith Grounding • The earth shall not be considered as an effective ground fault current path. True or False Copyright 2005 Ted "Smitty" Smith Grounding • True 250.4(A)(5) Copyright 2005 Ted "Smitty" Smith Overcurrent Protection • The secondary conductors of a delta-wye three phase transformer are protected from overcurrent by the transformer’s primary overcurrent device only. The secondary conductors are 10’ 3” in length. The combined calculated loads of the secondary conductors is 110 amperes. The secondary conductors feed a 125 ampere main breaker. The secondary conductors are enclosed in EMT. Conditions of maintenance and supervision do not ensure that only qualified personnel will service the system. Is this an acceptable installation according to the NEC? Copyright 2005 Ted "Smitty" Smith Overcurrent Protection • NO 240.21 (3)(1) • This tap is greater than 10 feet in length. The code now requires that taps greater than 10 feet must be made so that maintenance and service are done by qualified personnel. This typically means that the facility has a full time electrical staff. Copyright 2005 Ted "Smitty" Smith Equipment Use • Handhold enclosure covers shall have an _____________________ that prominently identifies the function of the enclosure. Copyright 2005 Ted "Smitty" Smith Equipment Use • identifying mark or logo 314.30(D) Copyright 2005 Ted "Smitty" Smith Conductors and Cable Assemblies • Type MC cable does not have to be supported if it is not more than 2 feet long and it is being used to provide flexibility to a termination. True or False Copyright 2005 Ted "Smitty" Smith • True Conductors and Cable Assemblies 320.30(D) Copyright 2005 Ted "Smitty" Smith Equipment Use • Wiring installed in aircraft hangars in unclassified locations that are adjacent to areas in which flammable liquids or vapors are not likely to be released, such as stock rooms or electrical control rooms, which are adequately ventilated and are effectively cut off from the hangar itself by walls or partitions, shall be permitted to be of any suitable type wiring method recognized by chapter 3 of the NEC. True or False Copyright 2005 Ted "Smitty" Smith Equipment Use • True Exception to 513.7 Copyright 2005 Ted "Smitty" Smith Services • A cable tray may serve to carry serviceentrance conductors along with other conductors as long as there is a ________. Copyright 2005 Ted "Smitty" Smith Services • Barrier 230.44Ex Copyright 2005 Ted "Smitty" Smith Equipment Use • The 480 volt auxiliary equipment of an electric discharge lamp is permanently installed in a luminaire and the luminaire is mounted on a pole for the illumination of a highway. What is the minimum height above the ground the auxiliary equipment must be mounted? Copyright 2005 Ted "Smitty" Smith Equipment Use • 22 ft 210.6(D)(1)(a) Copyright 2005 Ted "Smitty" Smith Equipment Use • Is the terminal of an electric discharge lamp rated in excess of 1000V considered to be a live part according to the NEC? Copyright 2005 Ted "Smitty" Smith Equipment Use • Yes 410.80 (C) Copyright 2005 Ted "Smitty" Smith Services • The service head for entrance-conductors should be located above the point of attachment but may be located elsewhere as long as the attachment is within __________ feet. Copyright 2005 Ted "Smitty" Smith Services • 2 feet 230.54(C) Ex Copyright 2005 Ted "Smitty" Smith Overcurrent Protection • Can the next standard sized overcurrent protective device be used to protect tap conductors for transformer secondary conductors? Copyright 2005 Ted "Smitty" Smith Overcurrent Protection • NO 240.21(C) Copyright 2005 Ted "Smitty" Smith Grounding • All grounding electrodes as described in 250. 52(A)(1) through 250.52(A)(6) that are ____________ at each building or structure served shall be bonded together to form the grounding electrode system. Copyright 2005 Ted "Smitty" Smith Grounding • Present 250.50 Copyright 2005 Ted "Smitty" Smith Grounding • When bonding equipment, __________shall not be used for this connection and the termination shall not depend solely on__________________. Copyright 2005 Ted "Smitty" Smith Grounding • Sheet metal screws, solder 250.8 Copyright 2005 Ted "Smitty" Smith Grounding • Is an equipment grounding conductor required to be installed in listed metal flexible conduit that is 2 feet in length and is used only to provide flexible connection to a motor? Copyright 2005 Ted "Smitty" Smith Grounding • Yes 250.118(5)(d) Copyright 2005 Ted "Smitty" Smith Grounding • Exposed, non-current carrying, metal parts of motion picture projection equipment that is fastened in place shall be grounded regardless of voltage. True or False Copyright 2005 Ted "Smitty" Smith Grounding • True 250.112 (H Copyright 2005 Ted "Smitty" Smith Grounding • Exposed, non-current carrying, metal parts of equipment that is connected by cord and plug, regardless of voltage, that is installed in non-hazardous locations shall be grounded. True or False Copyright 2005 Ted "Smitty" Smith Grounding • False 250.114 (1) and (2) Copyright 2005 Ted "Smitty" Smith Grounding • The connection of a grounding electrode conductor or bonding jumper to fire-proofed structural steel shall not be required to be accessible if it is made with an irreversible compression connection. True or False Copyright 2005 Ted "Smitty" Smith Grounding • True 250.68 (A) Exep. 2 Copyright 2005 Ted "Smitty" Smith Grounding • A ground rod of 8 feet in length must be installed so that the connection point of the grounding electrode conductor remains accessible and above the ground. True or False Copyright 2005 Ted "Smitty" Smith Grounding • False 250.53 (G) and 250.68 (A) Exp. 1 Copyright 2005 Ted "Smitty" Smith Grounding • The ground fault current path of the equipment grounding system is intended to return fault current back to the earth. True or False Copyright 2005 Ted "Smitty" Smith Grounding • False 250.2 Back to the source Copyright 2005 Ted "Smitty" Smith Feeders and Branch Circuits • Where calculations result in a fraction of an ampere that is less than __________, such fractions shall be permitted to be dropped. Copyright 2005 Ted "Smitty" Smith Feeders and Branch Circuits • .5 220.5(B) Copyright 2005 Ted "Smitty" Smith Feeders and Branch Circuits • Outlets for heavy duty lamp holders shall be calculated at a minimum of _______ voltamperes. Copyright 2005 Ted "Smitty" Smith Feeders and Branch Circuits • 600 220.14(E) Copyright 2005 Ted "Smitty" Smith Feeders and Branch Circuits • The rules for calculating the load on fixed multi-outlet assemblies are found in _______________. Copyright 2005 Ted "Smitty" Smith Feeders and Branch Circuits • 220.14(H) 220.14(H) Copyright 2005 Ted "Smitty" Smith The End • Each of the slides will now be repeated. • They are not timed in this segment. To change a slide, click on the side with your left mouse button. • Be sure to physically look up the answers in your code book to improve your look up speed and skill. Copyright 2005 Ted "Smitty" Smith Practice Code Look Up Questions and Answers Copyright 2005 Ted "Smitty" Smith Equipment Use • A luminaire is installed in a clothes closet and the nearest point of storage space is located 8 inches from the luminaire. The luminaire is a recessed incandescent type. Is this a legal application? Copyright 2005 Ted "Smitty" Smith Equipment Use • Yes 6 Inches required Copyright 2005 Ted "Smitty" Smith 410.36(C)(3) Grounding • The earth shall not be considered as an effective ground fault current path. True or False Copyright 2005 Ted "Smitty" Smith Grounding • True 250.4(A)(5) Copyright 2005 Ted "Smitty" Smith Grounding • An equipment grounding conductor is connected to a disconnect enclosure by means of a mechanical lug. The lug is connected to the enclose by means of a thread forming machine screw. Is this an acceptable installation? Copyright 2005 Ted "Smitty" Smith Grounding • Yes 250.8(A)(6) Copyright 2005 Ted "Smitty" Smith Raceways • A 10 foot, unbroken piece of electrical nonmetallic tubing is fished into an existing wall to feed a new junction box. No supports are placed on the electrical nonmetallic tubing inside the wall or within three feet of the junction box. Is this an acceptable installaion? Copyright 2005 Ted "Smitty" Smith Raceways • Yes 362.30(A) Exception 3 Copyright 2005 Ted "Smitty" Smith Equipment Use • All convenience receptacles in a home including the kitchen counter top receptacles shall be tamper resistant type. True or False Copyright 2005 Ted "Smitty" Smith Equipment Use • True 406.11 Copyright 2005 Ted "Smitty" Smith Equipment Use • Wiring installed in aircraft hangars in unclassified locations that are adjacent to areas in which flammable liquids or vapors are not likely to be released, such as stock rooms or electrical control rooms, which are adequately ventilated and are effectively cut off from the hangar itself by walls or partitions, shall be permitted to be of any suitable type wiring method recognized by chapter 3 of the NEC. True or False Copyright 2005 Ted "Smitty" Smith Equipment Use • True Exception to 513.7 Copyright 2005 Ted "Smitty" Smith Special Occupancies • A cow milking station building has a 2” concrete floor with metal rails separating each milking station. Each milking station has an electric milking unit including disconnect mounted to the separating rail. Is an equipotential plane required in the floor of this building? Copyright 2005 Ted "Smitty" Smith Special Occupancies • Yes 547.10(A)(1) Copyright 2005 Ted "Smitty" Smith Special Occupancies • Several receptacles are installed in a health care facility. The receptacles are fed from the emergency system. Each receptacle is hospital grade with the correct ratings required. The receptacles are placed on the same wall as receptacles fed from the normal system. All receptacles are tamper resistant, ivory in color with ivory nameplates. Is this installation acceptable? Copyright 2005 Ted "Smitty" Smith Special Occupancies • No 517.30 (E) • The emergency system receptacles must be identified with a distinctive color or marking. Copyright 2005 Ted "Smitty" Smith Services • Type SE cable when used as service cables shall be permitted to be formed in a gooseneck patern and used without a service head if it is taped with a _______________ weather resistant thermoplastic. – A. black or red – B. self sealing – C. listed – D. approved Copyright 2005 Ted "Smitty" Smith Services • Self sealing 230.54(B) Copyright 2005 Ted "Smitty" Smith Services • Raceways that carry service-conductors that are embedded in masonry shall be __________. Copyright 2005 Ted "Smitty" Smith Services • Arranged to drain 230.53 Copyright 2005 Ted "Smitty" Smith Services • The disconnecting means for power monitoring equipment, surge protective devices, control circuit of the ground fault protection system, and ___________ service disconnecting means shall not be considered as a switch for the purpose of determining the maximum number of switches for the service disconnecting means. – A. secondary – B. power operable – C. manually operated – D. None of the above Copyright 2005 Ted "Smitty" Smith Services • Power operable 230.71(A) Copyright 2005 Ted "Smitty" Smith Special Occupancies • A site isolating device shall be installed at the distribution point where __________ or more agricultural buildings or structures are supplied from the distribution point. – A. 1 – B. 3 – C. 5 – D. None of the above Copyright 2005 Ted "Smitty" Smith Special Occupancies • None of the above 547.9(A)(1) • Two or more is the correct answer Copyright 2005 Ted "Smitty" Smith Special Occupancies • A switch that is located outside of the patient care vicinity in a patient care area of a healt care facility shall be permitted to be installed without an insulated equipment grounding conductor. – True – False Copyright 2005 Ted "Smitty" Smith Special Occupancies • True 517.13(B) Exception 2 Copyright 2005 Ted "Smitty" Smith Special Occupancies • A site isolating device used in an agricultural facility shall be permanently marked to identify it as a site isolating device. This marking shall be located _______________ or immediately adjacent thereto. – A. at the main service entrance – B. inside the disconnecting cover – C. on the operating handle – D. on the face of the disconnecting means Copyright 2005 Ted "Smitty" Smith Special Occupancies • On the operating handle 547.9(A)(10) Copyright 2005 Ted "Smitty" Smith Calculations • A conductor passing through a junction box with a loop length of ______________ shall be counted twice for box fill calculations. Copyright 2005 Ted "Smitty" Smith Calculations • Twice the minimum length required by Article 300.14 • 314.16(B)(1) Copyright 2005 Ted "Smitty" Smith Equipment Use • A 1/2" knockout will be made in a fluorescent light fixture that will be mounted over a junction box. The light fixture will be mounted with toggle bolts. A 1/2" chase nipple will be installed so that the conductors from the box can be brought into the fixture for make up. Is this is legal installation according to the NEC? Copyright 2005 Ted "Smitty" Smith Equipment Use • No 410.14(A) Copyright 2005 Ted "Smitty" Smith Equipment Use • Is thermal protection required for the ballast of a fluorescent exit light? Copyright 2005 Ted "Smitty" Smith Equipment Use • No 410.73(E)(3) Copyright 2005 Ted "Smitty" Smith Feeders and Branch Circuits • The size of a feeder, grounded conductor shall not be smaller than required by_________, except that _________ shall not apply where grounded conductors are run in parallel. Copyright 2005 Ted "Smitty" Smith Feeders and Branch Circuits • 250.122, 250.122(F) 215.2(A) Copyright 2005 Ted "Smitty" Smith Feeders and Branch Circuits • Where the premises wiring system has branch circuits supplied from more than one nominal voltage system, each ungrounded conductor of a branch circuit, where accessible, shall be identified by __________. Copyright 2005 Ted "Smitty" Smith Feeders and Branch Circuits • System 210.5(C) Copyright 2005 Ted "Smitty" Smith Equipment Use • The size of the industrial control panel supply conductor shall have an ampacity not less than ________ percent of the full load current of all resistance heating loads plus 125% of the full load current rating of the highest rated motor plus the sum of the full load current ratings of all connected motors and apparatus based on their duty cycle that may be in operation at the same time. Copyright 2005 Ted "Smitty" Smith Equipment Use • 125% 409.20 Copyright 2005 Ted "Smitty" Smith Equipment Use • A ballast in a fluorescent luminaire that is used for egress lighting and energized only during a failure of the normal supply shall not have ________________. Copyright 2005 Ted "Smitty" Smith Equipment Use • Thermal Protection 410.73(E)(4) Copyright 2005 Ted "Smitty" Smith Feeders and Branch Circuits • A load not less than ___________ volt amperes shall be included for each 2-wire laundry branch circuit installed as required by 210.11(C)(2). Copyright 2005 Ted "Smitty" Smith Feeders and Branch Circuits • 1500 220.52(B) Copyright 2005 Ted "Smitty" Smith Feeders and Branch Circuits • An alternate load calculation for determine if the existing service or feeder is of sufficient capacity to serve additional loads in an existing dwelling unit is found in __________________. Copyright 2005 Ted "Smitty" Smith Feeders and Branch Circuits • 220.83 220.83 Copyright 2005 Ted "Smitty" Smith Grounding • The earth shall not be considered as an effective ground fault current path. True or False Copyright 2005 Ted "Smitty" Smith Grounding • True 250.4(A)(5) Copyright 2005 Ted "Smitty" Smith Overcurrent Protection • The secondary conductors of a delta-wye three phase transformer are protected from overcurrent by the transformer’s primary overcurrent device only. The secondary conductors are 10’ 3” in length. The combined calculated loads of the secondary conductors is 110 amperes. The secondary conductors feed a 125 ampere main breaker. The secondary conductors are enclosed in EMT. Conditions of maintenance and supervision do not ensure that only qualified personnel will service the system. Is this an acceptable installation according to the NEC? Copyright 2005 Ted "Smitty" Smith Overcurrent Protection • NO 240.21 (3)(1) • This tap is greater than 10 feet in length. The code now requires that taps greater than 10 feet must be made so that maintenance and service are done by qualified personnel. This typically means that the facility has a full time electrical staff. Copyright 2005 Ted "Smitty" Smith Equipment Use • Handhold enclosure covers shall have an _____________________ that prominently identifies the function of the enclosure. Copyright 2005 Ted "Smitty" Smith Equipment Use • identifying mark or logo 314.30(D) Copyright 2005 Ted "Smitty" Smith Conductors and Cable Assemblies • Type MC cable does not have to be supported if it is not more than 2 feet long and it is being used to provide flexibility to a termination. True or False Copyright 2005 Ted "Smitty" Smith • True Conductors and Cable Assemblies 320.30(D) Copyright 2005 Ted "Smitty" Smith Equipment Use • Wiring installed in aircraft hangars in unclassified locations that are adjacent to areas in which flammable liquids or vapors are not likely to be released, such as stock rooms or electrical control rooms, which are adequately ventilated and are effectively cut off from the hangar itself by walls or partitions, shall be permitted to be of any suitable type wiring method recognized by chapter 3 of the NEC. True or False Copyright 2005 Ted "Smitty" Smith Equipment Use • True Exception to 513.7 Copyright 2005 Ted "Smitty" Smith Services • A cable tray may serve to carry serviceentrance conductors along with other conductors as long as there is a ________. Copyright 2005 Ted "Smitty" Smith Services • Barrier 230.44Ex Copyright 2005 Ted "Smitty" Smith Equipment Use • The 480 volt auxiliary equipment of an electric discharge lamp is permanently installed in a luminaire and the luminaire is mounted on a pole for the illumination of a highway. What is the minimum height above the ground the auxiliary equipment must be mounted? Copyright 2005 Ted "Smitty" Smith Equipment Use • 22 ft 210.6(D)(1)(a) Copyright 2005 Ted "Smitty" Smith Equipment Use • Is the terminal of an electric discharge lamp rated in excess of 1000V considered to be a live part according to the NEC? Copyright 2005 Ted "Smitty" Smith Equipment Use • Yes 410.80 (C) Copyright 2005 Ted "Smitty" Smith Services • The service head for entrance-conductors should be located above the point of attachment but may be located elsewhere as long as the attachment is within __________ feet. Copyright 2005 Ted "Smitty" Smith Services • 2 feet 230.54(C) Ex Copyright 2005 Ted "Smitty" Smith Overcurrent Protection • Can the next standard sized overcurrent protective device be used to protect tap conductors for transformer secondary conductors? Copyright 2005 Ted "Smitty" Smith Overcurrent Protection • NO 240.21(C) Copyright 2005 Ted "Smitty" Smith Grounding • All grounding electrodes as described in 250. 52(A)(1) through 250.52(A)(6) that are ____________ at each building or structure served shall be bonded together to form the grounding electrode system. Copyright 2005 Ted "Smitty" Smith Grounding • Present 250.50 Copyright 2005 Ted "Smitty" Smith Grounding • When bonding equipment, __________shall not be used for this connection and the termination shall not depend solely on__________________. Copyright 2005 Ted "Smitty" Smith Grounding • Sheet metal screws, solder 250.8 Copyright 2005 Ted "Smitty" Smith Grounding • Is an equipment grounding conductor required to be installed in listed metal flexible conduit that is 2 feet in length and is used only to provide flexible connection to a motor? Copyright 2005 Ted "Smitty" Smith Grounding • Yes 250.118(5)(d) Copyright 2005 Ted "Smitty" Smith Grounding • Exposed, non-current carrying, metal parts of motion picture projection equipment that is fastened in place shall be grounded regardless of voltage. True or False Copyright 2005 Ted "Smitty" Smith Grounding • True 250.112 (H Copyright 2005 Ted "Smitty" Smith Grounding • Exposed, non-current carrying, metal parts of equipment that is connected by cord and plug, regardless of voltage, that is installed in non-hazardous locations shall be grounded. True or False Copyright 2005 Ted "Smitty" Smith Grounding • False 250.114 (1) and (2) Copyright 2005 Ted "Smitty" Smith Grounding • The connection of a grounding electrode conductor or bonding jumper to fire-proofed structural steel shall not be required to be accessible if it is made with an irreversible compression connection. True or False Copyright 2005 Ted "Smitty" Smith Grounding • True 250.68 (A) Exep. 2 Copyright 2005 Ted "Smitty" Smith Grounding • A ground rod of 8 feet in length must be installed so that the connection point of the grounding electrode conductor remains accessible and above the ground. True or False Copyright 2005 Ted "Smitty" Smith Grounding • False 250.53 (G) and 250.68 (A) Exp. 1 Copyright 2005 Ted "Smitty" Smith Grounding • The ground fault current path of the equipment grounding system is intended to return fault current back to the earth. True or False Copyright 2005 Ted "Smitty" Smith Grounding • False 250.2 Back to the source Copyright 2005 Ted "Smitty" Smith Feeders and Branch Circuits • Where calculations result in a fraction of an ampere that is less than __________, such fractions shall be permitted to be dropped. Copyright 2005 Ted "Smitty" Smith Feeders and Branch Circuits • .5 220.5(B) Copyright 2005 Ted "Smitty" Smith Feeders and Branch Circuits • Outlets for heavy duty lamp holders shall be calculated at a minimum of _______ voltamperes. Copyright 2005 Ted "Smitty" Smith Feeders and Branch Circuits • 600 220.14(E) Copyright 2005 Ted "Smitty" Smith Feeders and Branch Circuits • The rules for calculating the load on fixed multi-outlet assemblies are found in _______________. Copyright 2005 Ted "Smitty" Smith Feeders and Branch Circuits • 220.14(H) 220.14(H) Copyright 2005 Ted "Smitty" Smith