Switches
Used to control the various lighting outlets installed in residential wiring.
The single-pole switch
defined as a unit of an electrical system intended to carry, but not use, electric energy.
A device
Nonmetallic-Sheathed Cable (Type NM), is Also known as
“Romex"
The most common fastener used in residential wiring.
Nails
Conductors are sized according to the
American Wire Gauge (AWG).
used on 240-volt circuits to control a load from one location.
The double-pole switch
used to protect people from electrical shock.
Ground Fault Circuit Interrupter (GFCI) Receptacles
Used for underground installation of branch circuits and feeder circuits.
Underground Feeder Cable (Type UF)
type of panelboard that contains the main disconnecting means for the residential service entrance as well as the fuses or circuit breakers used to protect circuits and equipment like water heaters, ranges, dryers, and lighting.
Load center
Should have long, straight claw to simplify removal of electrical equipment.
Electrician’s Hammer
have a combination of two devices, both of which are mounted on the same strap.
Combination switch
designed to detect a wide range of arc-faults to help reduce the likelihood of the electrical system being an ignition source of a fire.
Arc Fault Circuit Interrupter (AFCI) Receptacles
have a metal outer sheathing and provide very high levels of physical protection for the conductors in the cable.
Armored Cable (Type AC)
and/or
Metal-Clad (Type MC) Cable
Provided to open the circuit if the current reaches a value that will cause an excessive or dangerous temperature in conductors or conductor insulation.
Overcurrent Protection Devices
not designed to function as an insulator.
The comfort-grip handles on electrical screwdrivers and pliers are designed for comfort and to provide a secure grip.
They are not designed to function as an insulator from electrical shock and are not to be used on “live” electrical equipment.
used to brighten or dim a lighting fixture’s lamps.
Dimmer switches
typically require a special receptacle installation:
–Electric range
– Electric clothes dryer
Supplies electrical power from the utility company to a building’s electrical system but can also be used to supply power to a large appliance, like an electric range.
Service Entrance Cable: Type SE and USE
Automatic overcurrent device that trips into an open position and stops the current flow in an electrical circuit.
Circuit Breaker
Strips outside sheathing from Type AC and Type MC cable
Rotary Armored Cutter
used in 120-volt circuits to control a lighting load from three or more locations.
Four-way switches
This switch has no "on/off" designation
3-way & or 4-way switches
The three types of Type NM cable
Type NM-B
Type NMC-B
Type NMS-B
Overcurrent protection device that opens a circuit when the fusible link is melted away by the extreme heat caused by an overcurrent.
Fuse
current in amperes that a conductor can carry continuously under the conditions of use without exceeding its temperature rating.
Conductor Ampacity