Define and test a ground - ANSWER point in circuit connected to the earth.
How to test = use DMM, if resistance is higher than 0, may indicate ground does not provide
protection.
Electrical safety rule - ANSWER always use a circuit tester / voltage detector to check that
a circuit is de-energized before working on it.
Electrical safety rule - ANSWER never touch electrical wiring or equipment w/ wet hands
or while standing on a wet surface.
Electrical safety rule - ANSWER do not operate electrical equipment that is damaged,
frayed, or otherwise in poor condition.
Electrical safety rule - ANSWER use the correct fuse or circuit breaker for the circuit you
are working on.
Electrical safety rule - ANSWER never remove or bypass the ground prong on a plug.
Electrical safety rule - ANSWER do not use extension cords or multiple outlet adapters
that are not rated for the equipment you are using.
Electrical safety rule - ANSWER do not overload circuits by plugging in too many devices
or using high powered equipment.
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,Electrical safety rule - ANSWER do not use electrical equipment in wet or damp
conditions unless it is specifically designed for that purpose.
Electrical safety rule - ANSWER use properly rated and properly installed surge protectors
for sensitive electronic equipment.
Electrical safety rule - ANSWER always follow manufacturer's instructions for using
electrical equipment.
Purpose of a lockout / tag out - ANSWER to prevent unexpected energization or startup
of machinery or equipment while it is being services or repaired.
Two types of electrical current - ANSWER AC = alternating current (flows in one direction
first, then alternates to the other)
DC = direct current (electricity flows in only one direction)
How to use a circuit tester - ANSWER 1. Locate the circuit breaker or fuse that controls
circuit
2. Using tester, touch the red lead to the live wire and black to neutral / ground
Functions of four basic components of an electrical circuit - ANSWER power source
- source of electrical energy for circuit. Can be a battery, generator, or power outlet. The
power supply provides electrical current that flows thru the circuit.
Functions of four basic components of an electrical circuit - ANSWER conductor
- material that allows electricity to flow thru it (such as wire). The conductor carries
electrical current from power source to the load.
Functions of four basic components of an electrical circuit - ANSWER load
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, - device or appliance being powered by circuit (bulb, motor, etc). Load converts electrical
energy from circuit into other form of energy, such as light or motion.
Functions of four basic components of an electrical circuit - ANSWER switch
- device that is used to control the flow of electrical current in the circuit. Can be used to
turn circuit on / off, allowing load to be powered or de-powered as needed.
AC schematic symbol - ANSWER
DC schematic symbol - ANSWER
Resistor - ANSWER
Capacitor - ANSWER
Inductor - ANSWER
Ground - ANSWER
Fuse - ANSWER
Circuit breaker - ANSWER
Lamp - ANSWER
Switch - ANSWER
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How to test = use DMM, if resistance is higher than 0, may indicate ground does not provide
protection.
Electrical safety rule - ANSWER always use a circuit tester / voltage detector to check that
a circuit is de-energized before working on it.
Electrical safety rule - ANSWER never touch electrical wiring or equipment w/ wet hands
or while standing on a wet surface.
Electrical safety rule - ANSWER do not operate electrical equipment that is damaged,
frayed, or otherwise in poor condition.
Electrical safety rule - ANSWER use the correct fuse or circuit breaker for the circuit you
are working on.
Electrical safety rule - ANSWER never remove or bypass the ground prong on a plug.
Electrical safety rule - ANSWER do not use extension cords or multiple outlet adapters
that are not rated for the equipment you are using.
Electrical safety rule - ANSWER do not overload circuits by plugging in too many devices
or using high powered equipment.
1
,Electrical safety rule - ANSWER do not use electrical equipment in wet or damp
conditions unless it is specifically designed for that purpose.
Electrical safety rule - ANSWER use properly rated and properly installed surge protectors
for sensitive electronic equipment.
Electrical safety rule - ANSWER always follow manufacturer's instructions for using
electrical equipment.
Purpose of a lockout / tag out - ANSWER to prevent unexpected energization or startup
of machinery or equipment while it is being services or repaired.
Two types of electrical current - ANSWER AC = alternating current (flows in one direction
first, then alternates to the other)
DC = direct current (electricity flows in only one direction)
How to use a circuit tester - ANSWER 1. Locate the circuit breaker or fuse that controls
circuit
2. Using tester, touch the red lead to the live wire and black to neutral / ground
Functions of four basic components of an electrical circuit - ANSWER power source
- source of electrical energy for circuit. Can be a battery, generator, or power outlet. The
power supply provides electrical current that flows thru the circuit.
Functions of four basic components of an electrical circuit - ANSWER conductor
- material that allows electricity to flow thru it (such as wire). The conductor carries
electrical current from power source to the load.
Functions of four basic components of an electrical circuit - ANSWER load
2
, - device or appliance being powered by circuit (bulb, motor, etc). Load converts electrical
energy from circuit into other form of energy, such as light or motion.
Functions of four basic components of an electrical circuit - ANSWER switch
- device that is used to control the flow of electrical current in the circuit. Can be used to
turn circuit on / off, allowing load to be powered or de-powered as needed.
AC schematic symbol - ANSWER
DC schematic symbol - ANSWER
Resistor - ANSWER
Capacitor - ANSWER
Inductor - ANSWER
Ground - ANSWER
Fuse - ANSWER
Circuit breaker - ANSWER
Lamp - ANSWER
Switch - ANSWER
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