Training Bulletin #008 Flashcards
What is tb#008
Electrical hazards
NIOSH deaths per year and electricity death percentage
700 and 12%
What are amps
Current flow, quantity of electricity (gpm)
Volts
Difference in electrical potential between two points in a circuit (psi)
Kilovolts
Measure of 1000 volts
OHM’s
Resistance determines how much current will flow through a component (friction loss)
OHM’s law
One ohm is the resistance value through which one volt will maintain a current of one ampere.
Watts
Power is the amount of current times the voltage level at a given point (watts=amps x volts)
Extremely high voltage
Over 60,000 volts. Transmission voltage
High voltage
600-60,000 volts. Customer distribution usually 4.8kw
Low voltage
Below 600 volts. Secondary circuit voltage
Electricity fire hydraulics 5
Conductor = hose Current = water Voltage = pressure Amperes = gallons per minute Ohms = friction loss
Two components of transmission system
Transmission lines and distribution system
Describe a distribution system
Group of electric stations high and low voltage power lines
Utilize transformers to change high voltage into lower voltage
Number of ladwp receiving stations
21
