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| Three ways to control electrical hazards |
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| Engineering controls, work practices, PPE |
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| Cut off switches and breakers |
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| Safety items like eye wash stations |
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| A conducting connection, whether intentional or accidental, between an electrical circuit or equipoment and earth or to a conductor used in place of earth. |
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Ground-Fault Circuit Interrupter.
Device used to interrupt the electric circuit to the load when a fault current to ground exceeds a predetermined value less than required to operate the over current protective device of the supply circuit
does not work on ship |
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Term
| qualified eltrical worker |
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Definition
| person specifically trained in the hazards of working on energized parts and equipment. |
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Term
| electriity is the_____ cause of death in construction. |
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Definition
| second leading cause of death in construction |
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| electocution makes up ____% or construction fatalites annually |
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Shock
Fires
Explosions
Arc Flash
Arc Blast |
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Electrical source
HOT wire to the tool
The tool itself
Neutral wire returns electricity from the tool to the source(fround of "earth")
Ground |
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contact with body conductors
Contact with one conductor and ground
with a tool: Contact with "hot" metal part and ground |
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| material that allows electrons to flow through it (copper wire) |
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| the flow of electrons through a conductor |
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| Resists the flow of electrons (plastic coating around the wire) |
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| opposes electron flow( thickness of the copper wire) |
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4:1
4 feet of rise you need 1 foot of run away from wall. |
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| when using a ladder always have ____ points of contact |
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| more or less the same, but breaker is re-settable while fuse needs to be replaced. |
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| double insulated housing protects... |
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| the motor and protects you from motor electricity |
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| do no pull fuses from box unless you |
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| charge, you must ground them |
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