Two Minute Drill – Residential 2

Two Minute Drill – Residential 2
Improving your skill in code Look Up Increasing Speed Drill Copyright 2008, 2011, 2014, 2017 Ted "Smitty" Smith

Directions Copyright 2008 Ted "Smitty" Smith
Be sure to put the presentation in Slide Show Mode. This will activate the timer once you click on this slide. Each slide will transition to the correct answer automatically in 2:00 minutes. The correct answer will transition in 15 seconds. When you come to the slide with a Stop Sign, the timed portion will be done. Click on that slide to progress through the same questions without the timer. ONCE YOU ARE DONE WITH THE TIMED PORTION: VERY IMPORTANT: TAKE THE TIME TO ACTUALLY LOOK UP EACH OF THE ANSWERS> EVEN THOSE YOU KNEW THE ANSWER TO> PART OF THE DRILL IS TO TAKE YOU REPETITIVELY TO THE SECTION OF THE NEC YOU MAY NEED TO USE FOR THE EXAM. THE MORE YOU DO THIS< THE MORE SUCCESSFUL YOU WILL BE. Directions Copyright 2008 Ted "Smitty" Smith

a. bonding conductors for communication systems
1. The purpose of the interconnecting bonding termination is to provide a means for connecting _________________ to the grounding electrode system. a. bonding conductors for communication systems b. the service equipment c. all panelboards in the dwelling d. equipment grounding conductors Copyright 2008 Ted "Smitty" Smith

2. The point of attachment of the overhead service conductors to a residence is required to be at least _______________________ above grade, where the voltage is 120/240, single phase. a. 8 feet b. 10 feet c. 12 feet d. 15 feet Copyright 2008 Ted "Smitty" Smith

a. a cord not more than 4 feet in length
3. All single-phase cord and plug connected room air conditioners located in the bedroom of a dwelling unit, shall be provided with _____________________. a. a cord not more than 4 feet in length b. a cord with conductors not smaller than size 12 AWG c. factory installed GFCI protection d. factory installed AFCO. HDCI, or LCDI protection Copyright 2008 Ted "Smitty" Smith

a. at least 2 inches in diameter b. a minimum of 3 inches in diameter
4. When installing an overhead service using a rigid metal conduit (RMC) mast for the support of the service drop conductors, the mast shall be of adequate strength or be ___________________ to safely withstand the strain imposed by the service drop. a. at least 2 inches in diameter b. a minimum of 3 inches in diameter c. supported by braces or guys d. less then 4 feet in length Copyright 2008 Ted "Smitty" Smith

5. When wall switches are installed in the same room with a spa or hot tub, the minimum distance from the switches to the inside wall of the hot tub or spa shall be ______________________. a. 5 feet b. 10 feet c. 15 feet d. 18 feet Copyright 2008 Ted "Smitty" Smith

6. All 15 and 20 ampere. Single phase, 125 volt receptacle outlets located at least _______________ from the inside walls of permanently installed swimming pool shall be provided with GFCI protection. a. 10 feet b. 15 feet c. 20 feet d. 25 feet Copyright 2008 Ted "Smitty" Smith

7. A luminaire shall be supported independently of the outlet box when it weighs more than _________________, unless the outlet box is listed and marked on the interior of the box for the maximum weight to be supported. a. 6 pounds b. 25 pounds c. 35 pounds d. 50 pounds Copyright 2008 Ted "Smitty" Smith

8. Of the following listed connectors, what type is prohibited for connection of a grounding conductor to enclosures? a. clamps b. pressure connectors c. sheet metal screws d. lugs Copyright 2008 Ted "Smitty" Smith

Copyright 2008 Ted "Smitty" Smith
10. When an intermediate metal conduit (IMC) contains conductors' of 1000 volts or less and is buried under a gravel driveway of a single family dwelling, the IMC must be have a cover of at least ______________________ . a. 12 inches b. 18 inches c. 24 inches d. 30 inches Copyright 2008 Ted "Smitty" Smith

12. A single family dwelling is equipped with three wall mounted ovens rated 6 kW, 8 kW and 3.5 kW. The SFD also has a cook top rated at 6 kW and an electric broiler rated at 3.5 kW. What is the demand of the cooking equipment on the main service entrance? a kW b kW c kW d kW Copyright 2008 Ted "Smitty" Smith

12. a. Table 220. 55. Columns A and B compared to Column C
12. a Table Columns A and B compared to Column C. Note Number 3 Copyright 2008 Ted "Smitty" Smith

14. A demand factor of ____________ may be applied to the neutral loads of 240 volt, single phase, electric clothes dryers and cooking equipment when doing residential service calculations. a. 75% b. 70% c. 60% d. 50% Copyright 2008 Ted "Smitty" Smith

15. What is the demand on the main service entrance of the following fastened in place appliances: Water Heater, 4.5 kW at 240 V, Dishwasher, 1.25 kW at 120 V, Garbage disposal, kW at 120 volts, Trash compactor, kW at 120 V, Attic Fan, .864 kW at 120 volts, Air Conditioner, 5.9 kW at 240 volts? a. 16,456 VA b. 7,085 VA c. 9,446 VA d. 15,000 VA Copyright 2008 Ted "Smitty" Smith

15. b 220.53 Air conditioners can not be considered fastened in place appliances.
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. VERY IMPORTANT: TAKE THE TIME TO ACTUALLY LOOK UP EACH OF THE ANSWERS> EVEN THOSE YOU KNEW THE ANSWER TO> PART OF THE DRILL IS TO TAKE YOU REPETITIVELY TO THE SECTION OF THE NEC YOU MAY NEED TO USE FOR THE EXAM. THE MORE YOU DO THIS< THE MORE SUCCESSFUL YOU WILL BE. Copyright 2008 Ted "Smitty" Smith