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Code Practice ch 3
Special Equipment
Question | Answer |
---|---|
1. Special permission means the authority having jurisdiction has given ___ consent | written |
2. By definition, an electric sign can be fixed, stationary, or portable self-contained. True/False | True |
3. How is hoistway defined | |
4. Machinery used as part of, or in connection with, an electrical installation would be considered a piece of equipment by definition. True/False | True |
5. ___ is defined as neon tubing that is itself the sign or outline lighting and is not attached to an enclosure or sign body | skeleton tubing |
6. In general, the main contact conductors carried along runway for a crane shall be supported on insulating supports at intervals not exceeding | 20 feet |
7. Which of the following is/are permitted to be used for overcurrent protection for an electroplating direct-current circuit | any of the above |
8. The ampacity of the branch-circuit supply conductors for x-ray equipment shall not be less than ___of the momentary rating of the equipment or 100% of the long-time rating, whichever is greatest | 50% |
9. A 2-wire DC integrated-electrical circuit is permitted to be underground. True/False | True |
10. The minimum size conductor generally permitted for a lighting circuit in a traveling elevator cable is ___ AWG copper | 14 |
11. The provision of Article ___ apply to field-installed wiring using off-site manufactured assemblies for branch circuits in accessible areas | 604 |
12. Identify the scope of Article 626 and how an electrified truck parking space is defined | |
13. conductors for audio signal conductors are NOT permitted to be installed in a metallic auxiliary gutter. True/False | False |
14. Irrigation cable for electrically driven irrigation machines is required to be supported at intervals NOT exceeding ___ | 4 feet |
15. The basic photovoltaic device which generates electricity when exposed to light is called a ____ | solar cell |
16. The main common return conductor in the electromagnetic supply for a pipe organ shall NOT be less than ___ AWG | 14 |
17. Portable or mobile signs in wet or damp location shall be provided with a factory-installed | ground-fault circuit interrupter |
18. A working space of at least ___ high, ___ wide by ___ deep shall be provided at each ballast, transformer, and electronic power supply or at its enclosure where NOT installed in an electric sign | 3 ft, 3 ft, 3 ft |
19. Equipment for use in electroplating processes shall be ___ | identified for such service |
20. The NEC defines industrial machinery, in part, as a power-driven machine not being portable by hand. True/False | True |
21. Article 668 covers electrolytic cells used as a source of electric energy and for cells used for the production of hydrogen. True/False | False |
22. Branch-circuit conductors supplying information technology equipment shall have an ampacity of NOT less than __- of the total connected load | 125% |
23. When an arc welder does not have a built-in disconnection means, a circuit breaker is permitted to be used as the disconnecting means. True/False | True |
24. A remote ballast for a lighting fixture associated with electric sign or outline lighting covered by Article 600 is installed above a suspended ceiling. The enclosure for the ballast is securely fastened, independent of the ceiling grid system. A/V | Acceptable |
25. The allowable ampacities of insulated copper conductors used with short-time rated crane and hoist motors is determined from Table ___ | 610.14(A) |
26.The total connected load of an electroplating equipment installation is 72 amps. What is the minimum ampacity of the branch-circuit conductors | 90, 72 * 125% = 90 |
27. Type AC cable is used as a branch circuit to supply receptacles for information technology equipment. The cable is installed under an accessible area, under a raised floor of approved construction. The cable is installed in accord with 300.11 acc/vio | Acceptable |
28. A ___ branch circuit shall supply the elevator hoistway pit lighting and receptacle | seperate |
29. Electrical vehicle charging systems are covered by the NEC. True/False | True |
30. For the purposes of Article 625, electric vehicle charging loads ___ (shall/shall not) be considered to be continuous loads | shall |
31. Which of the following cables would NOT be permitted as a wiring method for electric vehicle supply equipment cable: EV,EVJ,SJO,EVJT | SJO |
32. A fire pump ___ (shall/shall not) be permitted to be supplied by an on-site power production facility where conditions for its use are met | shall |