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Flash Cards Practice

1. In regard to a commercial building, where a service-entrance conduit having a length of six (6) feet contains four (4) size 2 AWG THWN insulated copper current-carrying conductors, each of the conductors have an allowable ampacity of _____.

Question 1 of 25

2. Over head spans of open conductors and open multi-conductor shall be ________ over residential property and driveways where the voltage does not exceed 300 volts to ground.

Question 2 of 25

3. Service - entrance cables shall be supported by straps or other approved means within _______ inches of every service head, goose-neck, or connection to a raceway or enclosure.

Question 3 of 25

4. Underground service conductors that are not encased in concrete and that are buried 18 inches or more below grade shall have their location identified by a warning ribbon that is placed in the trench at least ________ above the underground installation.

Question 4 of 25

5. Over head conductors for festoon lighting shall not be smaller than ________ AWG unless the conductors are supported by messenger wires.

Question 5 of 25

6. 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 6 of 25

7. What is the minimum length, in feet, for rod and pipe ground electrodes made of specific materials?

Question 7 of 25

8. The total marked rating of a cord-and-attachment-plug-connected room air conditioner shall not exceed _____ percent of the rating of a branch circuit where no other loads are supplied.

Question 8 of 25

9. Overhead conductors for festoon lighting shall not be smaller than ________ unless the conductors are supported by messenger wires.

Question 9 of 25

10. What is the maximum cross-sectional value that conduit nipples under 24 inches long may be filled?

Question 10 of 25

11. In each dwelling unit, if the small appliance load is subdivided between two or more feeders, the calculated load for each will include at least ________ for each 2-wire small appliance branch circuit.

Question 11 of 25

12. A receptacle outlet shall be installed at each wall counter-top space that is _______ inches or wider.

Question 12 of 25

13. At least ________ of free conductor shall be left at each outlet, junction, and switch point for splices or the connections of luminaries (fixtures) or devices.

Question 13 of 25

14. Receptacle outlets shall be calculated at not less than ______ va for each single yoke.

Question 14 of 25

15. For installations consisting of not more than two 2-wire branch circuits, the feeder or branch - circuit disconnecting means shall have a rating of not less than __________.

Question 15 of 25

16. What is the minimum size of a rectangular manhole?

Question 16 of 25

17. Thermal insulation shall not be installed above a recessed luminaire (fixture) or within _______ inches of the recessed luminaires (fixtures) enclosure, wiring compartment, or ballast unless it is identified for contact within insulation, Type IC.

Question 17 of 25

18. Where the supplemental electrode is a rod, pipe, or plate electrode, that portion of the bonding jumper that is the sole connection to the supplemental grounding electrode shall not be required to be larger than _________ copper wire.

Question 18 of 25

19. True or False: It is permissible to attach, strap, or tape power-limited fire alarm cables to the exterior of a conduit or raceway.

Question 19 of 25

20. In front of electric equipment, the working space must have space for doors or hinged panels to open ______ degrees or more.

Question 20 of 25

21. 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 21 of 25

22. If a branch circuit served by 12 AWG conductors is protected by a 15-ampere circuit breaker, what kind of rating does it have?

Question 22 of 25

23. Lighting systems for fountains, pools, spas, and similar locations must be installed _______ or more horizontally from the nearest water's edge unless Article 680 permits otherwise.

Question 23 of 25

24. Which of the following shall not be located over the steps of a stairway?

Question 24 of 25

25. Fixtures wires shall not be smaller than ________ AWG.

Question 25 of 25


 

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