Week 7 NEC
The capacitor circuit conductor's ampacity shall be at least ______ % of the capaitor's rated current.
135
The combined length of one primary plus one secondary conductor (excluding any portion of the primary conductor protected at its ampacity) shall not exceed ____.
25 ft
Life safety branch installation and alternate power source connection shall provide that all functions (specified herein) be automatically restored to operation within ____ after interruption occurs.
10 seconds
Ground-fault protection of equipment shall be provided for solidly grounded wye electric services of more than 150 volts to ground but not exceeding ____ volts phase-to-phase for each service disconnect rated 1000 amperes or more.
1000
One transfer switch shall be permitted to serve one or more branches or systems in a facility with a maximum demand on the essential electrical system of ____.
150 kVA
Cartridge fuse and fuseholder overcurrent protection provisions are located in ____.
240.60 and 240.61
The tap conductor's ampacity shall not be less than the ______ on the circuits it supplies.
Combined calculated loads
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 71.2 ft from the floor is defined as the_______.
Patient Care Vicinity
____ branch circuits shall be protected at the motor nameplate current rating.
Torque motor
Demand calculations for generator set(s) sizing shall be based on the following: (1) prudent demand factors and historical data, (2) ____, (3) Article 220 feeder calculation procedures, or (4) any combination of the preceding.
connected load
Cable tray systems should be ____.
corrosion resistant
Where multiple power supplies serve the same dc system, the dc side of each power supply shall have a ____.
disconnecting means
All branch circuits serving patient care areas shall be provided with a(n) ____ by installation in a metal raceway system or a cable having a metallic armor or sheath assembly.
effective ground-fault current path
Receptacles located within the rooms, bathrooms, playrooms, activity rooms, and patient care areas of designated pediatric locations shall be either be listed tamper resistant or shall ____.
employ a listed tamper-resistant cover
A transformer vault door must be ____.
equipped with fully engaged locks
Electrical installation criteria and wiring methods for health care facilities are ____ for a standard commercial or industrial project.
far more specialized than
Minimum ampacity of arc welder conductors supplying a group of welders shall be based on ____ as determined in 630.11(A)
individual currents
Barriers are required in all service-entrance motor-control centers to ____ and terminals from the remainder of the motor-control center.
isolate service busbars
Requirements in 517.40(C) through 517.44 do not apply to freestanding buildings used as nursing homes and limited care facilities, provided that ____.
no surgical treatment requiring general anesthesia is offered
The branch circuit serving patient bed locations shall ____.
not be part of a multiwire branch circuit
The critical branch should include blood, bone and tissue banks, critical care systems, and ____.
nurse call systems
An alternate power source can be ____ driven by some form of prime mover(s).
on-site generator(s)
A transformer's primary conductor shall have an ampacity at least ________ of the feeder conductors' overcurrent device rating.
one-third
Means shall be provided to disconnect all conductors in a building (or other structure) from the ____.
service-entrance conductors
Generator accessories, including but not limited to, the ____, electrically operated louvers, and other generator accessories essential for generator operation, shall be arranged for automatic connection to the alternate power source.
transfer fuel pump
