Code Practice ch 2 Word Scramble
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| Question | Answer |
| 1. Premises wiring primarily includes exterior wiring and does NOT include interior wiring. True/False | False, Article 100 definitions |
| 2. When a bank of storage batteries is installed in a separate, well ventilated room with an unlocked door, the separate room make the bank of batteries inaccessible True/False | False, def 100 |
| 3. The most common nominal battery voltage for a lead-acid battery is __ volts per cell | 2 |
| 4. Capacitors shall be enclosed in vaults or outdoor fenced enclosures in compliance with the applicable provisions of art 110 when they contain more than __- gallons of flammable liquid | 3 gallons |
| 5. Under normal operating conditions, in order to prevent destruction of the cell due to ignition of gases within a battery cell, each vented cell shall be equipped with a ___ | flame arrester |
| 6. A thermal barrier shall be installed between resistors and combustible material when the distance is less than __ | 12 inches |
| 7. Article 450 covers the installation of all tansformers True/False | False; 450.1 exceptions |
| 8. Less flammable liquid insulated transformers are permitted to be installed indoors in a Type I or II building if which of the following conditions are met: | all of above |
| 9. Dry-type transformers installed outdoors shall have a __ enclosure | weather proof |
| 10. In general, dry-type transformers rated over 112 1/2 kVA installed outdoors shall NOT be located within ___ of combustible materials of buildings | 12 in |
| 11.In general, the ampacity of the conductors from the generator terminals to the first overcurrent device shall NOT be less than ___ of the nameplate current rating of the generator | 115% |
| 12. A sealed battery or battery cell must be equipped with ___ or be designed to prevent__ | pressure release vent, scatter of cell parts |
| 13. A 75-kVA dry-type, single-phase, 277 volt primary 120-volt secondary, completely enclosed transformer is installed indoors within six inches of combustible materials. In compliance? True/False | True 12 inches |
| 14. A door knob operated by turning and pushing to open the door is NOT permitted on the personnel exit door of a transformer vault doorway. True /False | True |
| 15. The ampacity of the capacitor circuit for a capacitor bank shall NOT be less than __ of the rated current of the capacitor | 135% |
| 16. Where accessible to unqualified persons, generators shall he no live parts exposed to accidental contact when the generator operates at more than ___ volts to ground | 50 |
| 17. Voltage transformers installed indoors or enclosed shall be protected with ___ | primary fuses |
| 18.In general, where the word transformer is used in Art 450, which of the following installations is it intended to cover | I,II, and III |
| 19. After a capacitor is disconnected from the source of supply, the residual voltage of the capacitor shall be reduced to __ volts, nominal, or less within one minute for capacitors rated 600 volts, nominal, or less | 50 |
| 20. A ___ battery is defined as a battery comprised of one or more rechargeable cells of the lead-acid, nickel-cadmium, or other rechargeable eletro-chemical types | stored |
| 21. For other than motor starting service, insulated conductors installed between a resistive element and a controller shall have an insulation with an operating temperature of NOT less than ___ where installed in accordance with art 470 | 90 degree C |
| 22. The door sill or curb around a liquid-cooled transformer installed to protect a transformer vault doorway shall NOT be less than a height sufficient to confine the oil from the largest transformer in the vault, but in no case be less than __ high | 4 in |
| 23. The rating of disconnecting means for a bank of capacitors shall NOT be less than ___ of the rated current of the capacitor bank | 135% |
| 24. Generators shall be so located that the replacement of brushes can be readily accomplished. True/False | True |
| 25. All transformers and transformer vaults are required to be readily accessible to qualified personnel for inspection or maintenance. True/False | False |
| 26.Battery locations ___ (shall/shall not) conform to the working space requirements of 110.26 | shall |
| 27. The walls and roofs of transformer vaults shall be constructed of materials which have adequate structural strength for the conditions with a minimum fire resistance of __ hours | ? |
| 28. Article __ covers the general requirements for equipment operating at more than 600 volts nominal | 490 |
| 29. What does Part IV of Article 490 address | mobile and portable equipment |
| 30. How is high voltage defined for the purposes of Art 490 | more than 600 volts |
Created by:
JoshHampton