-18. Cable tray systems should be-_. a. water tight c. mounted at least 8 ft. ab
ID: 2268754 • Letter: #
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-18. Cable tray systems should be-_. a. water tight c. mounted at least 8 ft. above grade d. corrosion resistant b. insulated from frost damage 19. Demand calculations for generator set(s) sizžing shall be based on the following: () prudent demfthed of the preced and ng. historical data, (2)(3) Article 220 feeder calculation procedures, or (4) any combina a. average load b. peak load c. connected load d. cable (material) capacity 20. The combined length of one primary plus one secondary conductor (excluding any portion o the primary conductor protected at its ampacity) shall not exceed a. 5 ft b. 10 ft c. 15ft d, 25 ft 21. An alternate power source can be _, driven by some form of prime mover(s). a. solar panels c. wind turbines b. a secondary service line d. on-site generaton(s) -22. The capacitor circuit conductor's ampacity shall be at least % of the capacitor's rated current. a. 100 c. 135 b. 125 d. 150 23. Cartridge fuse and fuseholder overcurrent protection provisions are located in a. 240.12 c. 240.60 and 240.61 b. 240.21 d. 404.8 and 404.13 24. A transformer vault door must be a. made of dual layer steel c. installed with a door sill b. equipped with fully engaged locks d. accessible to all 225. The space within a patient room no less than 6 ft beyond the bed's perimeter (in its normal location), and extending vertically no less than 71.2 ft from the floor is defined as the a. critical care zone b. electrical interference vicinity c. safety zone d. patient care vicinity 26. Flexible cords used in hazardous (classified) locations for connection of portable utilization equipment (including lamps operating at more than 8 volts between conductors) shall be of a type approved for a. damp conditions b. peak voltages c. extra-hard usage d. current surges 27. The of the essential electrical system shall supply power for lighting, receptacles, and equipment in a hospital. a. critical care system c. emergency patient care system b. patient electrical network (PEN) d. life safety branchExplanation / Answer
18) Cable tray systems should be insulated from frost damage because cable trays are made of galvanized steel, stainless steel, aluminum, or glass-fiber reinforced plastic.It protect from corrosion over the surface. Due to insulation , may reduce the heat dissipation.
19)Demand calculations for generator set(s) sizing shall be based on the following:1)prudent demand factor and historical data 2) connected load,3)Article 220 feeder calculation procedures, or4)any combination of the preceding.
20)The combined length of one primary and one secondary conductor(exculding any portion of primary conductir protected at its ampacity) shall not exceed 25ft.
21)An alternator power source can be on-site generators(s) driven by some form of prime movers.
22)The capacitor circuit conductor's ampacity shall be at least 135% of the capacitor's rated current.
23)Cartridge fuse and fuse holder overcurrent protection provisions are located in 240.60 and 240.67(but in the option it is given 240.61 which is incorrect)
24)A transformer vault door must be equipped with fully engaged locks.
25)The space within a patient room no less than 6ft beyond the bed's perimeter(in its normal location),and extending vertically no less than 71.2ft from the floor is defined as the patient care vicinity.
26)Flexible cords used in hazardous(classified)locations for connection of portable utilization equipment(including lamps operating at more than 8 volts between conductors) shall be of a type approved for extra -hard usage.
27)The life safety branch of the essential electrical system shall supply power for lighting,receptacles, and equipment in a hospital.
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