Smitty’s Two Minute Drill Grounding

Smitty’s Two Minute Drill Grounding 2017-4
A drill to help you improve your code skills and your ability to find answers in the code book. © Ted “Smitty” Smith 2016, 2017

Directions Left click on the presentation ICON located at the bottom of the slide directory to the left of the this slide or in the top menu under SlideShow. 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. REMEMBER: To have the best effectiveness, put this presentation in slide show mode and use the timers. This will help you get to 2 minutes per question. Do no worry about the answers until you get through the timed section. Following the timed section, the slides are repeated without time so you can look them up.

Question 1 Where ungrounded conductors are increased in size due to voltage drop, what must be done with the equipment grounding conductor(EGC)? A. The EGC must be increased to the same size B. The EGC must be proportionally increased in size C. The EGC can remain the size determined in D. The EGC must be increased by one trade size Copyright 2017 Ted "Smitty" Smith

Question 1 Answer 250.122(B) B. Proportionally increased
Copyright 2005 Ted "Smitty" Smith

Question 2 If a listed self-grounding receptacle is installed on a surface box with mounting terminals, what other provisions must be made to accomplish effective grounding? A. Removal of the non-conductive washer from the second device screw B. The addition of a wire bonding jumper from the device to the box C. Attachment of an EGC from the circuit raceway D. No other requirements Copyright 2016 Ted "Smitty" Smith

Question 2 Answer 250.146 D. No other requirements

Question 3 Which of the following is not required to be connected to an equipment grounding conductor in a residence? A. Refrigerators B. Double insulated hand drill C. Sump pumps D. Portable Headlamps Copyright 2005 Ted "Smitty" Smith

Question 3 answer B. Double insulated hand drill 250.114 Exception

Question 4 In residential locations, which of the following shall be connected to an equipment grounding conductor? A. Aquariums B. Freezers C. Hedge-clippers D. All of the above Copyright 2017 Ted "Smitty" Smith

Question 4 Answer 250.114 (3) D. All of the above

Question 5 In the case of non-metallic boxes, how can grounding be accomplished? A. Provide an equipment grounding conductor in the supply circuit B. Non-metallic boxes render the circuit grounding unnecessary C. Grounding shall be performed by installing a bonding jumper between the device and the box D. GFIC receptacle Copyright 2005 Ted "Smitty" Smith

Question 6 Which condition does not apply to qualify listed flexible metal conduit as an equipment grounding conductor? A. Must be terminated in a listed fitting B. Circuit contained may not exceed 20 amps C. Raceway must be supported by materials utilizing multiple contact points D. Combined length does not exceed 6 feet Copyright 2005 Ted "Smitty" Smith

Question 7 If an equipment grounding conductor is required to be larger than #6, it can be identified by the following method: A. Black insulation with yellow phase tape B. Coloring the insulation at the terminations with green phase tape C. Adhesive labels at terminations with the word “Green” printed on them D. Equipment grounding conductors cannot be larger than #6 unless insulation is entirely green. Copyright 2005 Ted "Smitty" Smith

Question 8 Self-grounding devices are permitted to establish the grounding path between the device yoke and a flush mounted box A. True B. True, if device is securely fastened and evaluated with a circuit tester C. In no case shall a device provide for all grounding requirements Copyright 2005 Ted "Smitty" Smith

Question 9 A. Yes B. No C. Yes, if bare is tempered aluminum
Can an equipment grounding conductor be insulated or bare, if so desired? A. Yes B. No C. Yes, if bare is tempered aluminum D. Yes, if bare conductor is copper clad aluminum Copyright 2005 Ted "Smitty" Smith

Question 10 If multiple circuits are installed in a raceway, how is the size of the EGC determined? A. Based on the largest overcurrent protective device protecting conductors in the raceway B. Based on the total ampacity of the devices protecting enclosed conductors C. A GEC must be installed for each circuit contained in the raceway D. The cma of the ungrounded conductors are determined and the EGC is sized at 12.5% Copyright 2005 Ted "Smitty" Smith

Question 11 When using a surface mounted box and a listed exposed work cover mounted receptacle, which is listed as providing satisfactory ground continuity, how many screws, with a screw locking means, must secure the cover to the device, in order to comply with equipment grounding requirements? A. One fastener with the paper washer removed B. Two screws C. Four screws, one in each corner D. No requirement due to the listing Copyright 2017 Ted "Smitty" Smith

Question 11 Answer 250.146(A) B. Two screws

Question 12 Which of the following conditions would equipment not be required to be connected to an equipment grounding conductor? A. When located in a damp or wet location B. When located more than 8’ high and 5’ horizontally from other grounded objects C. When any terminal of the equipment operates at over 150V to ground D. Where supplied by a metal clad cable Copyright 2016 Ted "Smitty" Smith

End of Drill Click on this slide to continue to the repeat of the questions. The timer will not operate in this section. Click on each slide to advance. Review the questions and look up the answers. Copyright 2005 Ted "Smitty" Smith

Question 1 Where ungrounded conductors are increased in size due to voltage drop, what must be done with the equipment grounding conductor(EGC)? A. The EGC must be increased to the same size B. The EGC must be proportionally increased in size C. The EGC can remain the size determined in D. The EGC must be increased by one trade size Copyright 2017 Ted "Smitty" Smith

Question 1 Answer 250.122(B) B. Proportionally increased

Question 2 If a listed self-grounding receptacle is installed on a surface box with mounting terminals, what other provisions must be made to accomplish effective grounding? A. Removal of the non-conductive washer from the second device screw B. The addition of a wire bonding jumper from the device to the box C. Attachment of an EGC from the circuit raceway D. No other requirements Copyright 2016 Ted "Smitty" Smith

Question 2 Answer 250.146 D. No other requirements

Question 3 Which of the following is not required to be connected to an equipment grounding conductor in a residence? A. Refrigerators B. Double insulated hand drill C. Sump pumps D. Portable Headlamps Copyright 2005 Ted "Smitty" Smith

Question 3 answer B. Double insulated hand drill 250.114 Exception

Question 4 In residential locations, which of the following shall be connected to an equipment grounding conductor? A. Aquariums B. Freezers C. Hedge-clippers D. All of the above Copyright 2017 Ted "Smitty" Smith

Question 4 Answer 250.114 (3) D. All of the above

Question 5 In the case of non-metallic boxes, how can grounding be accomplished? A. Provide an equipment grounding conductor in the supply circuit B. Non-metallic boxes render the circuit grounding unnecessary C. Grounding shall be performed by installing a bonding jumper between the device and the box D. GFIC receptacle Copyright 2005 Ted "Smitty" Smith

Question 6 Which condition does not apply to qualify listed flexible metal conduit as an equipment grounding conductor? A. Must be terminated in a listed fitting B. Circuit contained may not exceed 20 amps C. Raceway must be supported by materials utilizing multiple contact points D. Combined length does not exceed 6 feet Copyright 2005 Ted "Smitty" Smith

Question 7 If an equipment grounding conductor is required to be larger than #6, it can be identified by the following method: A. Black insulation with yellow phase tape B. Coloring the insulation at the terminations with green phase tape C. Adhesive labels at terminations with the word “Green” printed on them D. Equipment grounding conductors cannot be larger than #6 unless insulation is entirely green. Copyright 2005 Ted "Smitty" Smith

Question 8 Self-grounding devices are permitted to establish the grounding path between the device yoke and a flush mounted box A. True B. True, if device is securely fastened and evaluated with a circuit tester C. In no case shall a device provide for all grounding requirements Copyright 2005 Ted "Smitty" Smith

Question 9 A. Yes B. No C. Yes, if bare is tempered aluminum
Can an equipment grounding conductor be insulated or bare, if so desired? A. Yes B. No C. Yes, if bare is tempered aluminum D. Yes, if bare conductor is copper clad aluminum Copyright 2005 Ted "Smitty" Smith

Question 10 If multiple circuits are installed in a raceway, how is the size of the EGC determined? A. Based on the largest overcurrent protective device protecting conductors in the raceway B. Based on the total ampacity of the devices protecting enclosed conductors C. A GEC must be installed for each circuit contained in the raceway D. The cma of the ungrounded conductors are determined and the EGC is sized at 12.5% Copyright 2005 Ted "Smitty" Smith

Question 11 When using a surface mounted box and a listed exposed work cover mounted receptacle, which is listed as providing satisfactory ground continuity, how many screws, with a screw locking means, must secure the cover to the device, in order to comply with equipment grounding requirements? A. One fastener with the paper washer removed B. Two screws C. Four screws, one in each corner D. No requirement due to the listing Copyright 2017 Ted "Smitty" Smith

Question 11 Answer 250.146(A) B. Two screws

Question 12 Which of the following conditions would equipment not be required to be connected to an equipment grounding conductor? A. When located in a damp or wet location B. When located more than 8’ high and 5’ horizontally from other grounded objects C. When any terminal of the equipment operates at over 150V to ground D. Where supplied by a metal clad cable Copyright 2016 Ted "Smitty" Smith

End of Drill Click on this slide to continue to the repeat of the questions. The timer will not operate in this section. Click on each slide to advance. Review the questions and look up the answers. Copyright 2005 Ted "Smitty" Smith

Smitty’s Two Minute Drill Grounding

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