Glossary Category:

GFCI

Ground-Fault Circuit-Interrupter A device intended for the protection of personnel that functions to de-energize a circuit or portion thereof within an established period of time when a ground-fault current exceeds the values established for a Class A device....

Grommets

A part used to line an opening so that edges are protected against something that may pass through the opening. An example is electrical wiring passing through the cabinet of an appliance.

Gunite

A cement concrete material that is sprayed on a surface or into a form. Swimming pools are often made with gunite.

Gypsum board

A flat panel made of gypsum covered with paper on each side that is very often used for wall covering material.

HACR

(used with A/C) A resistance type circuit breaker that has characteristics usable with air conditioning system compressor circuits.