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15 Cards in this Set
- Front
- Back
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Voltages greater than or equal to_____are consitered high voltage
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1000 volts
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The resistance of the human body is around...
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500 ohms
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The resistance to ground (ships hull) should be...
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less than 0.1 ohms
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When using a metal cased tool, ensure it is equipped with....
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a 3 conductor cord and 3 pronged plug
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Do not join extension cords longer than 25 ft together and never....
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join more than 2
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Single length extension cords up to_____are allowed
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100 ft long
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When performing work on a switchboard....
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the entire switchboard shall be danger tagged
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Protective leather gloves shall be worn over...
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rubber gloves when working on electrical equipment
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For work greater than 300 volts...
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a non-conductive safety line shall be tied around the person working in case he needs to be pulled off
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Electrical plugs with metal shells are....
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prohibited aboard ships
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Common shipboard outlet voltages
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115
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Crevice corrosion is....
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when an oxygen starved area in an electrolyte causes corrosion
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A Uniterruptable Power Supply (UPS) does what?
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supplies power to electrical loads during intervals of power disturbance
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Circuits above___can be fatal
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30 volts
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Thermowell
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a closed end tube designed to accomodate a temperature sensor in piping installations
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