Electrical Equipment
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| 1. Premises wiring primarily includes exterior wiring and does NOT include interior wiring. True/False | show 🗑
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| show | False, def 100
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| 3. The most common nominal battery voltage for a lead-acid battery is __ volts per cell | show 🗑
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| show | 3 gallons
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| show | flame arrester
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| show | 12 inches
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| 7. Article 450 covers the installation of all tansformers True/False | show 🗑
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| 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: | show 🗑
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| 9. Dry-type transformers installed outdoors shall have a __ enclosure | show 🗑
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| 10. In general, dry-type transformers rated over 112 1/2 kVA installed outdoors shall NOT be located within ___ of combustible materials of buildings | show 🗑
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| show | 115%
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| show | pressure release vent, scatter of cell parts
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| show | True 12 inches
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| 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 | show 🗑
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| show | 135%
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| 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 | show 🗑
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| 17. Voltage transformers installed indoors or enclosed shall be protected with ___ | show 🗑
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| 18.In general, where the word transformer is used in Art 450, which of the following installations is it intended to cover | show 🗑
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| 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 | show 🗑
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| 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 | show 🗑
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| show | 90 degree C
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| show | 4 in
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| 23. The rating of disconnecting means for a bank of capacitors shall NOT be less than ___ of the rated current of the capacitor bank | show 🗑
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| 24. Generators shall be so located that the replacement of brushes can be readily accomplished. True/False | show 🗑
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| 25. All transformers and transformer vaults are required to be readily accessible to qualified personnel for inspection or maintenance. True/False | show 🗑
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| 26.Battery locations ___ (shall/shall not) conform to the working space requirements of 110.26 | show 🗑
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| 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 | show 🗑
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| show | 490
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| show | mobile and portable equipment
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| show | more than 600 volts
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Created by:
JoshHampton