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Practice Code Look Up Two Minute Drill Copyright 2005 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 Copyright 2005 Ted "Smitty" Smith Raceways • When are you required to use an approved electrically conductive corrosion resistance compound on conduit threads? Copyright 2005 Ted "Smitty" Smith Raceways • On field Cuts in corrosive areas Copyright 2005 Ted "Smitty" Smith Equipment Use • Carnival and circus overhead wiring outside of tents and concession areas where the voltage-to-ground does not exceed 150V shall maintain a vertical clearance of ____________ above platforms, projections or surfaces from which they might be reached. Copyright 2005 Ted "Smitty" Smith Equipment Use • 10 Feet Copyright 2005 Ted "Smitty" Smith Equipment Use • Class III locations are those that are hazardous because of the presence of _______________. Copyright 2005 Ted "Smitty" Smith Equipment Use • Ignitable Fibers Copyright 2005 Ted "Smitty" Smith Branch Circuits and Feeders • What is the feeder or service demand load for two 3 kW ranges? Copyright 2005 Ted "Smitty" Smith Branch Circuits and Feeders • 4500 Watts Copyright 2005 Ted "Smitty" Smith Grounding • If the transfer switch for a portable generator switches the ___________________ conductor, then the portable generator shall be grounded in accordance with NEC Article 250.30. Copyright 2005 Ted "Smitty" Smith Grounding • Grounded Copyright 2005 Ted "Smitty" Smith Services • Service conductors shall be considered outside when run under the building if installed in conduit and buried ______________ under earth. Copyright 2005 Ted "Smitty" Smith Services • 18” Copyright 2005 Ted "Smitty" Smith Equipment Use • Under a raised floor in an Information Technology Equipment room, liquidtight flexible non-metallic conduit shall be permitted to enclose branch-circuit conductors for information technology communication equipment. True or False Copyright 2005 Ted "Smitty" Smith Equipment Use • True Copyright 2005 Ted "Smitty" Smith Motors • A feeder for a motor circuit shall have a protective device with a rating or setting ________________ the largest rating of the branch-circuit short-circuit and ground-fault protective device for any motor in the group, plus the sum of the full load currents of the other motors of the group. Copyright 2005 Ted "Smitty" Smith Motors • Not greater than Copyright 2005 Ted "Smitty" Smith Equipment Use • The purpose of 60/120V power systems is to reduce objectionable noise in areas containing sensitive electronic equipment. Its use is restricted to ________________ occupancies that are under close supervision by qualified personnel. Copyright 2005 Ted "Smitty" Smith Equipment Use • Commercial and Industrial 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 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 Copyright 2005 Ted "Smitty" Smith connected motors and 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 Grounding • The earth shall not be considered as an effective ground fault current path. True or False Copyright 2005 Ted "Smitty" Smith Grounding • True 5) 250.4(A)( 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 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 Conductors and Cable Assemblies • True 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 2005 Ted suitable typeCopyright wiring method "Smitty" Smith Equipment Use • True Exception to 513.7 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 Copyright 2005 Ted "Smitty" Smith this is legal installation 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 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 Copyright 2005 Ted mounted? "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 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 • 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 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 Raceways • When are you required to use an approved electrically conductive corrosion resistance compound on conduit threads? Copyright 2005 Ted "Smitty" Smith Raceways • On field Cuts in corrosive areas Copyright 2005 Ted "Smitty" Smith Equipment Use • Carnival and circus overhead wiring outside of tents and concession areas where the voltage-to-ground does not exceed 150V shall maintain a vertical clearance of ____________ above platforms, projections or surfaces from which they might be reached. Copyright 2005 Ted "Smitty" Smith Equipment Use • 10 Feet Copyright 2005 Ted "Smitty" Smith Equipment Use • Class III locations are those that are hazardous because of the presence of _______________. Copyright 2005 Ted "Smitty" Smith Equipment Use • Ignitable Fibers Copyright 2005 Ted "Smitty" Smith Branch Circuits and Feeders • What is the feeder or service demand load for two 3 kW ranges? Copyright 2005 Ted "Smitty" Smith Branch Circuits and Feeders • 4500 Watts Copyright 2005 Ted "Smitty" Smith Grounding • If the transfer switch for a portable generator switches the ___________________ conductor, then the portable generator shall be grounded in accordance with NEC Article 250.30. Copyright 2005 Ted "Smitty" Smith Grounding • Grounded Copyright 2005 Ted "Smitty" Smith Services • Service conductors shall be considered outside when run under the building if installed in conduit and buried ______________ under earth. Copyright 2005 Ted "Smitty" Smith Services • 18” Copyright 2005 Ted "Smitty" Smith Equipment Use • Under a raised floor in an Information Technology Equipment room, liquidtight flexible non-metallic conduit shall be permitted to enclose branch-circuit conductors for information technology communication equipment. True or False Copyright 2005 Ted "Smitty" Smith Equipment Use • True Copyright 2005 Ted "Smitty" Smith Motors • A feeder for a motor circuit shall have a protective device with a rating or setting ________________ the largest rating of the branch-circuit short-circuit and ground-fault protective device for any motor in the group, plus the sum of the full load currents of the other motors of the group. Copyright 2005 Ted "Smitty" Smith Motors • Not greater than Copyright 2005 Ted "Smitty" Smith Equipment Use • The purpose of 60/120V power systems is to reduce objectionable noise in areas containing sensitive electronic equipment. Its use is restricted to ________________ occupancies that are under close supervision by qualified personnel. Copyright 2005 Ted "Smitty" Smith Equipment Use • Commercial and Industrial Copyright 2005 Ted "Smitty" Smith Services • Service conductors shall be considered outside when run under the building if installed in conduit and buried ______________ under earth. Copyright 2005 Ted "Smitty" Smith Services • The service entrance of a building may be located less than three feet from a window as long as the conductors are installed so that they___________ of the window. Copyright 2005 Ted "Smitty" Smith Services • Run above the top level 230.9(A)Ex Copyright 2005 Ted "Smitty" Smith Services • Raceways that carry serviceconductors that are embedded in masonry shall be __________. Copyright 2005 Ted "Smitty" Smith Services • Arranged to drain Copyright 2005 Ted "Smitty" Smith 230.53 Services • A cable tray may serve to carry service-entrance 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 Services • True of False, the disconnect for a TVSS is not counted as one of the six disconnects allowed for a service. Copyright 2005 Ted "Smitty" Smith Services • True 230.71(A) Copyright 2005 Ted "Smitty" Smith Services • The service head for entranceconductors 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 • According to Article ___________________ of the 2005 NEC, nonstandard fuses are permitted. Copyright 2005 Ted "Smitty" Smith Overcurrent Protection • True 240.6(A) Copyright 2005 Ted "Smitty" Smith Grounding • For multiple separately derived systems the common grounding electrode conductor shall not be smaller than __________________. Copyright 2005 Ted "Smitty" Smith Grounding • 3/0 CU or 250Kcm AL 250.30(A)(4)(a) Copyright 2005 Ted "Smitty" Smith Raceways • The minimum burial depth for a nonmetallic raceway with no vehicular traffic shall be __________________ inches. Copyright 2005 Ted "Smitty" Smith Raceways • 4" Table 300.5 Col. 3 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 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 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 Copyright 2005 Ted "Smitty" Smith connected motors and 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 Grounding • The earth shall not be considered as an effective ground fault current path. True or False Copyright 2005 Ted "Smitty" Smith Grounding • True 5) 250.4(A)( 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 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 Conductors and Cable Assemblies • True 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 2005 Ted suitable typeCopyright wiring method "Smitty" Smith Equipment Use • True Exception to 513.7 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 Copyright 2005 Ted "Smitty" Smith this is legal installation 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 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 Copyright 2005 Ted mounted? "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 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 • 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 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