P RACTICE C ODE L OOK U P Two Minute Drill #7 Copyright 2005 Ted "Smitty" Smith.

D IRECTIONS 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

F URTHER M ORE You have seen all of these questions before. This time the slides will transition at different rates of speed. Remember do not worry about writing down the right answer for now. When you reach the end all of the slides will be repeated without the timer so you can take your time to find the ones you missed and write down the correct answers then. We have also added several multiple choice questions to prepare you for the actual exam. The next three two- minute drills you will be doing will have only multiple choice questions and will be weighted similarly to the actual tests you will be taking. Click on the slide to proceed. Copyright 2005 Ted "Smitty" Smith

G ROUNDING Electrical systems that are grounded shall be connected to earth in a manner that will __________. A. Limit voltages due to lightning, line surges or unintentional contact with higher voltages B. Stabilize the voltage-to-ground during normal operation C. Facilitate overcurrent protection device operation in case of ground faults D. Both a and b Copyright 2005 Ted "Smitty" Smith

E QUIPMENT Electrically heated smoothing irons shall be equipped with an identified _________ means. A. disconnecting B. temperature limiting C. current limiting D. none of these Copyright 2005 Ted "Smitty" Smith

G ROUNDING 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

E QUIPMENT Embedded deicing and snowmelt equipment cables, units and panels shall not be installed where they bridge ____________, unless provisions are made for expansion and contraction. A. roads B. over water spans C. runways D. expansion joints Copyright 2005 Ted "Smitty" Smith

E QUIPMENT U SE 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

S ERVICES 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

E QUIPMENT U SE 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

O VERCURRENT PROTECTION Equipment intended to break current at other than fault levels shall have an interrupting rating of the system voltage sufficient for the current that must be interrupted. True or False Copyright 2005 Ted "Smitty" Smith

E QUIPMENT U SE 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

F EEDERS AND B RANCH C IRCUITS 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

E QUIPMENT U SE 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

C ONDUCTORS AND C ABLE A SSEMBLIES 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

E QUIPMENT U SE 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

G ROUNDING 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

G ROUNDING 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

G ROUNDING 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

G ROUNDING 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

G ROUNDING 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

F EEDERS AND B RANCH C IRCUITS 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

F EEDERS AND B RANCH C IRCUITS 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

T HE E ND 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