Glossary of Wire & Cable Terminology

A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z


g - Abbreviation for gram.

G - Symbol for conductance. See conductance.

G. CABLE - G. cable is a type W or power cable with ground wires. The total CM (circular mil) area of the ground wires is approximately one-half to three-quarters of the CM area of one of the conductors.

GAS FILLED CABLE - Paper insulated lead sheath cable filled with gas which provides a self-supervised alarm system. There are three different types; low pressure, medium pressure, and high pressure.They may be installed in ducts, in air, or buried directly.

GAS PRESSURE COMPENSATED - A saturated paper insulated cable containing tubes for the transmission of gas pressure along a cable and with external gas feed to the tubes.

GAUGE - A term used to denote the physical size of a wire.

GC - Abbreviation for ground conductor.

GFI - Abbreviation for Ground Fault Interrupter. A protective device that detects abnormal current flowing to ground and then interrupts the circuit.

G-GC - Type G-GC mining cable with grounding conductor and a ground check conductor.

GHz - Abbreviation for gigahertz. See gigahertz.

GIGA - A prefix to a unit, denoting a multiple of one billion (10 9) of that unit.

GIGAHERTZ - A term for one billion (10 9 ) cycles per second. Used to replace the more cumbersome term kilomegacycle. Abbreviation GHz.

GLASS BRAID - Used to provide thermal and/or mechanical protection to the underlying insulation of certain types of conductors.

GPU - Abbreviation for Ground Power Unit. A GPU is a mobile power generator used typically at airports.

GRADED INDEX - In fiber optic cable the refractive index profile that varies with the radius of the core. The refractive indices decrease from the center axis out. The purpose is to reduce modal dispersion and thereby increase fiber bandwidth.

GROMMET - A flexible loop that serves as a fastening, support, or reinforcement; an eyelet of firm material to strengthen or protect an opening or to insulate or protect something passed through it.

GROUND - An object that makes an electrical connection with the earth; a large conducting body (as the earth) used as a common return for an electrical circuit and as an arbitrary zero potential; synonym for earth.

GROUND FAULT - A failure of transmission involving insulation to shield or insulation to ground wire.

GROUND POWER CABLE - A cable assembly fitted with the applicable terminations to supply power to an aircraft from a ground power unit (GPU).

GROUNDED NEUTRAL - The neutral wire is metallically connected to ground.

GRS - Abbreviation for Government Rubber Synthetic. This is a government standard for Buna-S rubber for jacketing and insulating compounds for military wires and cables.

GS - Abbreviation for galvanized steel.

GTO - Abbreviation for gas tube, sign, and oil burner ignition cable. Stranded tin copper conductor, polyethylene insulation, PVC jacket overall. Manufactured in 14 AWG for 10 kV and 15 kV service.

gu - Abbreviation for gauge.

GW - Abbreviation for galvanized wire.

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