Title: Unit 6 Glossary
Course: ELT 102 Basic Electricity & Wiring > Section: ELT 102 Basic Electricity & Wiring

Unit 6 Glossary

Terms

Term | Definitions
Busbar | Thick, rigid strips or bars of copper that serve as a common connection between several circuits. Busbars are usually used near the switchboard and can be enclosed in busways.
Cable | an assembly of one or more conductors, usually within a protective sheath.
Chassis | The frame or of a electrical machine, such as a car.
Cycle | The change in an alternating electrical sine wave from zero to a positive peak to zero to a negative peak and back to zero.
Earth Ground | A conducting connection which an electric circuit is connected at some point to the earth, or to some other large conducting body that can serve in place of the earth. The point can be a single po ...
Electrical Box | The system that serves as the source for household or building electricity. The electrical box is where the main electrical service comes in and is distributed throughout the building.
Feeder | A circuit conductor between the power supply source and a final branch circuit over-current device.
Four-way Switch | an electric switch used in house wiring so that a light may be turned on or off at three or more locations.
Frequency | the number of recurrences of a cycle that occur in a second.
Ground Conductor | a conductor which under normal conditions, carries no current, but serves to connect exposed metal surfaces to an earth ground.
Ground Fault Circuit Interrupter (GFCI) | is a fast-acting circuit breaker that senses small imbalances in an electrical circuit caused by the electrical current leaking to ground. If this imbalance occurs, the GFCI shuts off the electric ...
Hot Wire | an electrically charged, conductive wire that provides power to the load. The hot wire is usually covered with black insulation.
Joint | a connection between two more conductors.
LIGHT EMITTING DIODE (LED) | A solid - state display device that emits infrared light when a forward - biased current flows through it.
Line Voltage | The voltage present between any two of the conductors in a three-phase system. It is 1.732 times higher than phase voltage in a wye connection.
Megger | an instrument that generates a high voltage in order to test the resistance of insulation.