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Flash Cards Practice

1. Receptacle providing power for swimming pool recirculating pump motors must be GFCI protected, grounded, and must be at least how far from the inside walls of the pool?

Question 1 of 25

2. The load for an electric sign or outline lighting system should be computed at a minimum of _______ volt-amps when sizing the service calculation.

Question 2 of 25

3. 277 Volt lighting in a tunnel is required to no be less than _____.

Question 3 of 25

4. Show windows must be calculated either at 200 volt-amps per _________ of show window, or the unit load per outlet as required in other provisions of article 220.14.

Question 4 of 25

5. What is the minimum watts (VA), other than name plate rating (whichever is larger) clothes dryers are to be calculated at when doing residential feeder and service calculations?

Question 5 of 25

6. Where the service-entrance phase conductors are installed in parallel, in two or more raceways, the size of the grounded conductor in each raceway shall not be smaller than _______ AWG.

Question 6 of 25

7. Race-ways installed in solid rock shall be permitted to be buried at lesser depths than required where covered by _________ of concrete, which shall be permitted to extend to the rock surface.

Question 7 of 25

8. If an outlet box is designed to support ceiling suspended (paddle) fans weighing more than ______, then the maximum weight to be supported shall be included in the required marking.

Question 8 of 25

9. EMT shall be securely fastened in place at least every _______ feet.

Question 9 of 25

10. Cord and plug type equipment not fastened in place shall not exceed what percentage of the branch circuit ampere rating?

Question 10 of 25

11. Metal water pipes installed in or attached to a building or structure shall be bonded to _____.

Question 11 of 25

12. When installing nonmetallic sheathed cable enclosed in an underground buried PVC conduit, the cable _____.

Question 12 of 25

13. In front of electric equipment, the working space width must be at least ______, or the width of the equipment, whichever is greater.

Question 13 of 25

14. Unless they are within _______ of the wall, receptacle outlets in floors may not be counted as a part of the minimum required number of receptacle outlets.

Question 14 of 25

15. Plug fuses of the Edison-base type shall be classified at not over 125 volts and ________ and below.

Question 15 of 25

16. Where a branch circuit supplies continuous or any combination of continuous and noncontinuous loads, the rating of the overcurrent device shall not be less than the noncontinuous load plus ____ percent of the continuous load.

Question 16 of 25

17. When using rod and pipe electrodes, where rock bottom is encountered, he electrode shall be driven at an oblique angle not to exceed ________ from the vertical.

Question 17 of 25

18. In general, overhead service-drop conductors shall NOT be smaller than _____.

Question 18 of 25

19. Within or behind a surface of concrete, tile, gypsum, plaster, or other non-combustible material, boxes shall be installed so that the front edge of the box will not be set back of the finished surface more than ______ inch.

Question 19 of 25

20. What is the minimum separation for over-head communications wires and cables at any point in the span from the supply service-drops of up to 750 volts?

Question 20 of 25

21. What is the minimum clearance for communications wires and cables above all points of roofs above which they pass?

Question 21 of 25

22. The ampacity of types NM, NMC, and NMS cable should be determined in accordance with the _______ ( 140 degree F ) conductor temperature rating.

Question 22 of 25

23. Unless it is necessary to supply pool equipment, underground wiring is not allowed under a pool or in an area less than _______ ft. horizontally from the inside wall of the pool.

Question 23 of 25

24. The length of a pull box containing conductors of size 4 AWG and larger shall not be less than _____ times the trade diameter of the largest conduit entering the box when a straight pull of the conductors is to be made.

Question 24 of 25

25. For equipment rated 1200 amperes or more and over 6 feet wide that contain over-current devices, there shall be one entrance to and egress from the required working space not less than ________ high at each end of the working space.

Question 25 of 25