Ground
A metallic connection with the earth to
establish ground potential. Also, a common return to a point of zero
potential.
Grounded,
effectively
Intentionally connected to earth through a ground
connection or connections of sufficiently low impedance and having
sufficient current-carrying capacity to prevent the buildup of voltages that
may result in undue hazards to connect equipment or to persons.
Grounded Conductor
A system or circuit conductor that is intentionally
grounded, usually gray or white in color.
Grounding Conductor
A conductor used to connect metal equipment enclosures
and/or the system grounded conductor to a grounding electrode, such as the
ground wire run to the water pipe at a service; also may be a bare or
insulated conductor used to ground motor frames, panel boxes, and other
metal equipment enclosures used throughout electrical systems. In most
conduit systems, the conduit is used as the ground conductor.
Grounding Equipment
Conductor
The conductor used to connect the
non-current-carrying metal parts of equipment, raceways, and other
enclosures to the system grounded conductor, the grounding electrode
conductor, or both, of the circuit at the service equipment or at the source
of a separately derived system.
Grounding Electrode
The conductor used to connect the grounding electrode
to the equipment-grounding conductor, to the grounded conductor, or to both,
of the circuit at the service equipment or at the source of a separately
derived system.
Ground Fault
Circuit Interrupter
A device intended for the protection of
personal that functions to de-energize a circuit or portion thereof within
an established period of time when a current to ground exceeds some
predetermined value that is less than required to operate the overcurrent
protection device of the supply circuit.
Ground Fault
Protection of Equipment
A system intended to
provide protection of equipment from damaging line to ground fault currents
by operating to cause a disconnecting means to open all ungrounded
conductors of the faulted circuit. This protection is provided at current
levels less than those required to protect conductors from damage through
the operations of a supply circuit overcurrent device.
