ELECTRICAL SYSTEMS Flashcards
A continuous loop. It is the complete path traversed by an electric current which collectively defines an entire house wiring installation.
Electrical Circuit
(metal conduit) and the weatherhead create the entry point for electricity into your home.
Service Mast
measures the amount of electricity consumed.
Meter
in the form of a fuse box or breaker box, distributes power to individual circuits.
Main Service Panel
According to the National Electric Code, all wire splices and connections must be contained in a covered plastic or metal electrical box
Electrical Boxes enclose wire connections
connects the electrical system to the earth through a metal grounding rod driven to the house.
Grounding Wire
attach directly to a household electrical system. They are usually controlled with wall switches.
Light Fixtures
controls electricity passing through hot circuit wires.
Switches
provide plug-in access to electricity
Receptacle, sometimes called Outlets
most typical receptacle in wiring systems installed after 1965
120-volt, 15 amp receptacle
defined as that part of an electric circuit extending beyond the last circuit breaker or fuse.
Branch Circuit
Current enters a circuit loop on ____
hot wires
current returns along ____
neutral wires
hot wires are color
black or red
neutral wires are color
white or light gray
conducts current in the event of a ground fault and helps reduce the chancec of sever electrical shock
grounding wire
If a circuit carries too much current, it can
overload
protects each circuit in case of overloads.
fuse or a circuit breaker
connects the home’s electrical system to the earth.
grounding
the most common grounding electrode is a buried
copper-coated steel rod
other grounding electrodes includes reinforcing steel in the footing called
ufer ground
the portion of the supply conductors which entends from the street main duct to the switchboard of the building supply which comprises the conductor and equipment for delivering energy from the electricity supply system to the wiring system of the premises served.
Service Entrance
measures the amount of the electtrical consumption in a building
Electric Meter
this refers to all circuit conductors between the service equipment/entrance and the final branch circuit overcurrent device.
Feeder
useful for installing cables in finished wall cavities and for pulling wires through conduit
Fish Tape
to keep frequently used tools within easy reach.
Tool belt
in a variety of colors are used for marking wires and for attaching cables to a fish tape
Electrical tape
should be the primary concern of anyone working with electricity.
Safety
Underwriters Laboratories
UL
