Electrical Systems

Generation

Distribution

Receptacles, switches, luminaires

Fossil fuels being burned

Hydro

Solar

Wind

What other forms of generation can you think of?

After power is generated, it is carry over power lines into transformers

The transformer changes power from an extremely high voltage to a lower voltage which is easier and safer to work with.

Overhead

Underground

Switchgears

Panels

Each breaker is sized according to the load in which it is serving

Each panel is protected by it's on main breaker, which is how each panel is rated.

Cables (romex) and raceways (conduit) carry conductors to run from distribution to devices and also from devices to devices

Fuse (tiny wire inside that melts when too much current runs through it)

Breaker (mechanism that automattically opens a circuit when an overload or short circuit occurs)

Receptacles

Switches

Luminaires

Are there any other devices you can think of that we may use in a home?

Standard sizes are established for many different components establishing interchangeability between manufacturers. (for the most part)

Carry current to and from devices (wires, cables)

Copper

Aluminum

Copper-clad

The larger the number, the smaller diameter the conductor is

Set of codes electricians follow to ensure safe install and operation

Updated every three years