Electricity is a free flow of electrons through a conductive surface.
What are good conductors of electricity? , , .
If a path is open it means it will be off.
if a path is closed it means its on.
What is direct current (DC) ?
Current that flows in in direction in a complete path.
Current that turns in various directions.
Current that doesn't move anywhere.
has electrons that flow back and forth.
What is alternating current (AC)?
current that doesnt move at all.
electrons that flow back and forth
the current flows in 1 direction in a complete path.
electrons move in various directions but then form a complete path.
Which are the 6 districts?
Northeast (NE)
Orange County (OC)
North Coast (NC)
Metro (CM)
Western (WE)
Beach Cities (BC)
Balboa (BA)
Eastern (EA)
La Jolla (JL)
Primary lines coming out of a substation are known as..
cords
extras
feeders
extensions
Which are the four most common transmission voltages at SDGE?
138
230
300
500
600
69
Is 12-4 kv a distribution voltage or transmission voltage?
distribution
transmission
What type of voltage is 230?
subtransmission
What type of voltage is 500kv?
what type of voltage is 138kv?
These devices use step down and step up voltages and are central piece of equipment on a substation.
transformer
power tower
transmission pole
power grid
As voltage , amp .
are used for sectionalizing and isolating.
These three are the major divisions in an electrical system.
transportation
conversion
generation
This conductor is best because its light weight and cheap.
Copper
Lead
Aluminum
Silver
The prefix for a transmission pole is "P".
An underground conductor uses , and overhead conductor uses .
A live front transformer uses:
cable ends
load break
A dead break elbow can be removed when energized.
A service restorer and re-closer are the same thing.
A determines location of faulty cable, wire, or equipment.
What type of amps can a load break elbow be attached to?
200
both
what type of amps can a dead break elbow be attached to?
Our distribution portion of our system is made up of? and .
