Definitions cont'd - hdbk10920270

DOE-HDBK-1092-98

Fuse--(Over 600 volts, nominal.) An overcurrent protective device with a circuit opening fusible part

that is heated and severed by the passage of overcurrent through it. A fuse comprises all the parts that

form a unit capable of performing the prescribed functions. It may or may not be the complete device

necessary to connect it into an electrical circuit.

Ground--A conducting connection, whether intentional or accidental, between an electrical circuit

or equipment and the earth, or to some conducting body that serves in place of the earth.

Grounded--Connected to earth or to some conducting body that serves in place of the earth.

Grounded, effectively--(Over 600 volts, nominal.) Permanently connected to earth through a ground

connection of sufficiently low impedance and having sufficient ampacity that ground fault current

which may occur cannot build up to voltages dangerous to personnel.

Grounded conductor--A system or circuit conductor that is intentionally grounded.

Grounding conductor--A conductor used to connect equipment or the grounded circuit of a wiring

system to a grounding electrode or electrodes.

Grounding conductor, equipment--The conductor used to connect the non-current-carrying metal

parts of equipment, raceways, and other enclosures to the system grounded conductor and/or the

grounding electrode conductor at the service equipment or at the source of a separately derived

system.

Grounding electrode conductor--The conductor used to connect the grounding electrode to the

equipment grounding conductor and/or to the grounded conductor of the circuit at the service

equipment or at the source of a separately derived system.

Ground-fault circuit-interrupter--A device whose function is to interrupt the electric circuit to the

load when a fault current to ground exceeds some predetermined value that is less than that required

to operate the overcurrent protective device of the supply circuit.

Guarded--Covered, shielded, fenced, enclosed, or otherwise protected by means of suitable covers,

casings, barriers, rails, screens, mats, or platforms to remove the likelihood of approach to a point of

danger or contact by persons or objects.

Health care facilities--Buildings or portions of buildings and mobile homes that contain, but are not

limited to, hospitals, nursing homes, extended care facilities, clinics, and medical and dental offices,

whether fixed or mobile.

Heating equipment--For the purposes of 1910.306(g), the term "heating equipment" includes any

equipment used for heating purposes if heat is generated by induction or dielectric methods.

Hoistway--Any shaftway, hatchway, well hole, or other vertical opening or space in which an

elevator or dumbwaiter is designed to operate.

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