Galvanized Steel Wire -- Steel wire covered with zinc.

Galvanometer -- A device for detecting the presence or direction of small electrical currents.

Gas-Filled Cable -- A self-contained pressure cable in which the pressure medium is an inert gas having access to the insulation.

Gasoline Resistant -- A UL listing for an insulated wire which has passed 60-day immersion tests in water-saturated gasoline at a temperature of 30°C. This listing does not mean that a wire so marked may be continuously immersed in gasoline. It simply means that the particular wire has passed UL tests to demonstrate a certain degree of gasoline resistance and may therefore be used where occasional splashing or exposure to gasoline is expected.

Gauge -- A term to denote size of wire.

Generator -- A machine that transforms mechanical energy into electrical energy; also a dynamo.

Geophysical Cable -- Cable used in exploring for underground oil deposits.

Giga -- A numerical prefix denoting one billion, e.g. a gigacycle is one billion cycles.

Gigahertz (Ghz) -- A unit of frequency equal to one billion hertz.

Ground Fault -- A failure of transmission involving insulation to shield or insulation to ground wire.

Ground Loop -- A completed circuit between shielded pairs of a multiple pair cable created by random contact between the shields. An undesirable circuit condition in which interference is created by ground currents when grounds are connected at more than one point.

Ground Potential -- The potential of the earth. A circuit, terminal or chassis is said to be at ground potential when it is used as a reference point for other potentials in the system.

Ground Rods -- A solid metal pipe or rod which is driven into the earth in order to provide an earth ground for electrical circuits.

Ground Support Cable -- A cable construction, usually rugged and heavy, for use in ground support control or power systems.

Ground Wire -- A single soft-drawn copper wire, insulated or bare, used for connecting protectors and cable terminals to a ground. Available in 6, 12 and 14 AWG sizes.

Grounded Neutral -- The neutral wire is metallically connected to ground.

Guider Tip -- The device used to center the conductor or cable in the die. It also prevents plastic melt from existing at the rear of the crosshead.