Safety
What should you do if you find a damaged extension cord on a jobsite?
Remove it from service
Current or Flow
Two basic types of circuits are?
Series and Parallel
Practically all electrical power is generated and transmitted as?
Three-phase alternating current
Overload protectors are sensitive to?
Temperature and current
Amount of amperage that could kill a person?
.1 Amp
Substances that allow the free motion, or flow, of electrons are called?
Conductors
Ohm's Law formula
E=IR
Two types of three-phase circuits
Wye and Delta
A motor starter is a combination of what?
Contactor and overload protector
What is LOTO?
The existence of charged bodies, either positive or negative, produces what?
Static Electricity
Watt's Law formula
P=IE
Is AC voltage available in different voltages?
Yes
What is key to servicing electrically controlled installations?
Ability to read electrical diagrams
When checking an electrical circuit, you should assume what?
It is "hot" or "energized"
Do like charges repel or attract each other?
Repel
Series
Factors affecting flow of AC are?
Resistance, inductance, and capacitance
What are essential components to protect against heavy loads?
Fuses and fused disconnects
Guard all exposed sources of electricity or more than ______ volts
50
All electrical effects are caused by the movement of what?
Electrons
Parallel
Ratio of true power of apparent power is?
Power factor
What does NC stand for?
Normally closed