Terms Flashcards
A cylindrical assembly composed of a conductor centered inside a metallic tube or shield,
separated by a dielectric material, and usually covered by an insulating jacket.
Coaxial Cable
A qualifying term indicating that the circuit breaker does
not have any adjustment to alter the value of current at which it will trip or the time required for its
operation.
Nonadjustable (as applied to circuit breakers)
A cable containing optical fibers and current-carrying electrical
conductor
Composite Optical Fiber Cable
Intermittent operation in which the load conditions are regularly recurrent.
Duty, Periodic
A single unit, providing complete and independent living facilities for one or more
persons, including permanent provisions for living, sleeping, cooking, and sanitation.
Dwelling Unit
Surrounded by a case, housing, fence, or wall(s) that prevents persons from accidentally
contacting energized parts.
Enclosed
A nonmetallic raceway placed within a larger raceway.
Innerduct
Constructed so that moisture will not enter the enclosure under specified test conditions.
Watertight
A manually operated device used in conjunction with a transfer switch to
provide a means of directly connecting load conductors to a power source and of disconnecting the
transfer switch
Switch, Bypass Isolation
An assembly completely enclosed on all sides and top with sheet metal (except for ventilating
openings and inspection windows) and containing primary power circuit switching, interrupting devices,
or both, with buses and connections.
Switchgear
The conductors and equipment for delivering electric energy from the serving utility to the
wiring system of the premises served.
Service
Power conversion equipment that provides a means of adjusting the speed of an
electric motor.
Adjustable Speed Drive
An area including a basin with one or more of the following: a toilet, a tub, or a shower.
Bathroom
A branch circuit that supplies only one utilization equipment.
Branch Circuit, Individual
A load where the maximum current is expected to continue for 3 hours or more.
Continuous Load.
Without live parts exposed to a person on the operating side of the equipment.
Dead Front