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You must treat all wires as if they are ______ |
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What is the force that moves the electrons and current along the conductor? |
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T/F It is low voltage that most responders encounter in normal household emergencies |
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What are the pathways for the current? |
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T/F Any wire, device, or object that allows electrical current to flow along a pathway is considered a conductor |
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Definition
TRUE - even humans can be a conductor |
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Term
Electrical current flows from ________ voltage to __________ voltage |
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What is the method of taking the unwanted electrical current and returning it to the earth via a designed circuit? |
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What is the minimum distance for repsonders during electrical conductor emergencies? |
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What is the minimum safe distance for responders in electrical transmission emergencies? |
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Definition
35 feet from wires and 100 feet in heavy smoke |
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Term
T/F Electricity does not follow the path of least resistance, it follows ALL paths |
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The degree of shock and resulting injuries depends on what? |
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Definition
the amount of current and lenth of time the current passes through the body |
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Term
Why is the human body such a great conductor of electrical current? |
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Definition
The human body is made up of 90% salt water |
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Term
What color of pipe or wire around a pipe would indicate that it is a gas pipe? |
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What gas smells like rotten eggs? |
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Term
____________ gas is a colorless, tasteless, and odorless flammable gas |
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What are some chemical characteristics of natural gas? |
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Definition
colorless, tasteless, odorless, effective fuel, clean and efficient |
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Natural gas is for the most part stable - however it is a fuel - what can make natural gas explosive? |
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Definition
strong oxidizers, such as oxygen-enriched atmospheres, fluorine, and chlorine, can make natural gas very explosive |
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What happens when natural gas and chlorine come in contact? |
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What happens when natural gas and fluorine come in contact? |
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A relief valve vent for releasing excess pressure in natural gas systems may be disguised as a ? |
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What is used to reduce gas from high pressure to low pressure for residences? |
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Term
Low pressure meters operate at ___________ psig and are found on single-family units and smaller commercial properties |
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Term
When the petcock is in-line with the pipe the valve is off or on? |
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T/F Each appliance should have a shut-off |
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Where should the gas be controlled ff an appliance cannot be shut off at the connection? |
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Definition
the gas must be controlled at the meter or curb if the appliance does not have a gas shut-off |
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