Two Minute Drill Number 29- Conductors and Raceways

Two Minute Drill Number 29- Conductors and Raceways
Improving your skill in code Look Up Increasing Speed Drill Copyright 2008 Ted "Smitty" Smith

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. This drill is primarily concerning conductor and raceway installations. Copyright 2008 Ted "Smitty" Smith

2. Conduits exposed to sunlight and installed on rooftops shall have the ambient temperature determined using table ___________ for the purposes of determining conductor ampacity derating. 310.16 310.15(B)(2)(c) Table 1 Table 8 Copyright 2008 Ted "Smitty" Smith

5. Concealed knob and tube wiring shall be permitted in which of the following locations. Dwelling units for extension of existing installations Commercial garages Movie theaters None, knob and tube is not allowed anymore Copyright 2008 Ted "Smitty" Smith

6. Open wiring on insulators shall be permitted for _____________ and industrial establishments on systems of 600 volts or less and both indoors and outdoors. Farms Fish containment systems Dairy cow milking facilities All of the above Copyright 2008 Ted "Smitty" Smith

7. A single conductor listed and marked for use in cable tray of size __________ or greater may be installed in a cable tray in an industrial establishment. 6 AWG 1 AWG 1/0 AWG 350 kCMIL Copyright 2008 Ted "Smitty" Smith

10. When type NM cable, 12-3 is installed in an unfinished basement and is run at angles across the joists it is permissible to staple the NM cable to the bottom of the joists. True False Copyright 2008 Ted "Smitty" Smith

11. Flexible metallic tubing is used to enclose conductors in a branch circuit located in a dry location, the tubing is not exposed to damage and the entire length is 18 feet. Is this an acceptable installation? Yes No Copyright 2008 Ted "Smitty" Smith

12. A rigid PVC conduit is installed in a junction box, the PVC is 16 inches long and is unsupported. It does not contain a coupling and the other end terminates in another junction box. Is this an acceptable installation? Yes No Copyright 2008 Ted "Smitty" Smith

series wiremold is installed so that it runs along a wall from one office to another. A partition wall that is 4 inches wide separates the two offices. The wire mold runs through the wall. All receptacle devices are installed at least 6 inches away from each side of the wall. Is this an acceptable installation. Yes No Copyright 2008 Ted "Smitty" Smith

14. A branch circuit is 16 feet in length, it is supplied by three 12 AWG, THHN conductors installed in Flexible Metallic Conduit. The conduit is installed above the suspended ceiling. Is this an acceptable installation? Yes No Copyright 2008 Ted "Smitty" Smith

15. A liquid tight metallic conduit is installed to feed a load. Liquid tight flex was selected because of the number of obstacles and rigid metallic conduit would be too difficult to install. The liquid tight is run so that there are two 90 degree bends and three offsets. Is this an acceptable installation? Yes No 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