TB 8 Electrical Hazards Flashcards
AMPS
Current flow = Water (GPM)
Volts
Voltage is the difference in electrical potential between two points in a circuit.
Volts is the _____ behind current flow through a circuit
push or pressure
Volts is comparable to
Pounds per square inch
Kilovolts is the measure of ___
1000 volts
OHMS is the
resistance determines how much current will flow through a component.
Ohms is comparable to
friction loss
Watts =
amps x volts
Amps =
watts x volts
Volts =
watts x amps
Extremely high voltage :
excess of 60,000 volts
High voltage :
600 to 59,999 volts
High voltage usually found in
distribution systems, referred to as primaries
Low voltage :
below 600 volts
Low voltage are commonly referred to as :
secondaries
LADWP system is comprised of over _____ transformers
50,000
Generation facilities generate electricity between ___
4000 and 20,000 volts
though generation plants produce a substantial amount of volts, it is not ____
nearly enough to deliver power the long distances necessary to connect different parts of the city together
In order to raise the voltage generation stations use ___
switching facilities that rely on transformers
In switching facility transformers utilize their own magnetic fields to lower required amps while raising the pressure sometimes over ___
over one million voltages
Transmission lines are used to
from generation stations and generation plants to distribution stations
Transmission lines in LA can range from
69k to over 1000 kv
Most transmission lines are
230kv
Strings of insulators on transmission towers can range from
3 to 20 feet long
