www.okhighered.org/training-center/presentations/electricalsafetynq.ppt
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ELECTRICAL SAFETY
Safety Training for the
Non-Qualified
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DEFINITIONS
Electricity: Negatively charged particles moving over a conductor
Current: Movement of electrons along a conductor
Ground or grounding: Draining or passage of electricity into the earth
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DEFINITIONS
Alternating current: Current that alternates direction through a conductor
Direct current: Current that flows in the same direction through a
conductor
Static electricity: Electrical charge resulting from friction between
two objects or from objects striking
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DEFINITIONS
Shock: Condition when the body becomes a part of a circuit
Polarity: The flow of electrons in the proper direction
From the source to the device
Negative to positive through a device
Like charges attract; unlike charges repel
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DEFINITIONS
Conductor: A material with a relatively low resistance to the
flow of electrons
Insulator: Material that has a high resistance to the flow of electrons
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HOW IS THE SERIOUSNESS OF AN ELECTRICAL SHOCK DETERMINED?
The voltage (pressure) on circuit
Skin resistance and internal resistance
Amount of current flowing through the body, a function of volts and
amps
Path of the current
Bodys reaction to the shock
Length of time electricity is applied
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WHAT CAUSES SHOCKS?
Touching both wires of an electrical circuit