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Glossary of
Workplace Injury Legal Glossary
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GFCI (Ground-fault circuit interrupter): A
device that detects an insulation failure by comparing the amount of current
flowing to electrical equipment with the amount of current returning from the
equipment. Whenever the difference is greater than 5 milliamps, the GFCI trips
and thereby interrupts the flow of electricity.
Ground: A conducting connection,
intentional or unintentional, between an electrical circuit or equipment and the
earth, or to some conducting body that serves in place of the earth.
Ground-fault: A fault, or insulation
failure, in the wire used to create a path to ground.
Grounding: To prevent the buildup of
hazardous voltages in a circuit by creating a low-resistance path to earth or
some other ground plane.
Guarding: Placement of live parts of
electrical equipment where they cannot accidentally be contacted, such as in a
vault, behind a shield, or on a raised platform, to which only qualified persons
have access.
Guardrail system: A barrier erected to
prevent employees from falling to lower levels.
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