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Terms in this set (50)
magnetic force around an electric wire or iron core.
a device that produces direct current.
device that produces alternating electrical current but usually equipped
a high-speed rotary engine driven by water, steam, or other gases.
an electrical source and wires connected to a light, heater, or motor.
the measure of electrical pressure
the measure of electrical flow
an electrical circuit in which there is at least one place where current cannot flow.
a condition that occurs when electricity flows back to its source too rapidly and blows fuses, burns wires, and drains batteries.
making an electrical connection between a piece of equipment and the earth.
a round cylindrical piece of metal.
the body's reaction to an electric current.
Ground-fault circuit interrupter (GFCI)
a device that cuts off the electricity if even
very tiny amounts of current leave the normal circuit.
a waterproof conduit connection where an electrical entrance cable is connected to a building.
a device that converts high voltage from high-power lines to 230 volts for home and farm installations; device used to step current up or down.
an assembly of electrical wires, connectors, and fasteners used to transmit electricity from a transformer to a service entrance panel.
Service entrance panel
a box with fuses or circuit breakers where electricity enters a building.
a device that measures electricity, gas, or liquid that passes through a system.
the use of one watt of electricity for one hour.
the use of 1,000 watts for one hour.
electrical wiring, switches, and outlets that extend out from a service entrance panel.
plug or cartridge containing a strip of metal that melts when more than a specified amount of current passes through it.
a switch that trips and breaks the circuit when more than a specified amount of current passes through it.
Nonmetallic sheathed cable
cable composed of copper or aluminum wires covered with paper, rubber, or vinyl for insulation and protection.
flexible metal sheath with individual wires inside.
metal tube with individual insulated wires inside.
Electrical metallic tube (EMT)
a bendable type of metal conduit
small wires placed with others to form bundles to improve flexibility and conductivity.
loss of voltage as electricity travels through a wire.
Positive wires (hot wires)
conductors with black, red, or blue insulation that carry current to an appliance.
conductors with white insulation that carry current from an appliance back to the source.
original construction, including new wood.
a base or housing for a light bulb, fan motor, or other electrical device.
an insulated solderless connector used to connect the ends of electrical wires.
a device for receiving an electrical plug.
a device used to stop the flow of electricity.
Duplex (Double) receptacle
double receptacle wired so that both outlets are on the same circuit.
Splitting the receptacle
two receptacles in the duplex may be wired to two different circuits if the metal strap between the two screws is removed.
the one switch that controls one or more lights and/or outlets.
partially punched impression in electrical boxes.
Ground (gee) clip
a device by which ground wires are attached to electrical boxes.
device used to determine if electricity can flow between two points.
a switch that permits a light or receptacle to be controlled from two different locations by a pair of switches.
a type of terminal that accepts current feeds from a three-way switch.
Switching wires (traveler wires)
pair of wires attached to the light-colored screws on three-way or four-way switches.
a switch connected in the pair of traveler wires between two threeway switches.
Ground-fault circuit interrupter
common name for Nonmetallic sheathed cable
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