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Exam 1 Review

Across
Extremely high temperature discharge produced by an electric fault in the air
Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury
Class C fires include burning ________ equipment, motors, and transformers
A _____ fuse will show near zero resistance
Should be performed any time the work that needs to completed can be done so without power
Protectors worn over rubber insulating gloves to prevent damage
A ______ diagram shows the connection of all components in a piece of equipment
Can measure two or more electrical properties and displays a numerical value
The only power tools designed to be used as an ungrounded design
Electrically operated switch (contactor) that includes motor overload protection
The most severe signal word- represented by a red triangle
A control device that uses small control current to energize or de-energize loads, but does not include overload protection
Used to determine an approximate voltage and/or the type of voltage present
The systematic elimination of the various parts of a system or process to locate a malfunctioning part
Shows electrical connections and functions with graphic symbols, but not the size, appearance, or location
The approach boundary where any work performed is considered to be the same as making contact with the energized circuit
Has limited means for entry and exit and is not designed for continuous occupancy
Electrical power must be _______ when equipment is inspected, serviced, or repaired.
Down
Any device that converts electrical energy to motion, heat, light, or sound
Process of placing a danger tag on the source of electrical power, which indicates the equipment should not be used
Converts electrical energy into a linear mechanical force
Discharge of electric current across an air gap
Process of removing the source of electrical power and installing a device to prevent power from being turned on
Drawings that show physical details as seen by the eye
Shows the logic of an electrical circuit or system using symbols , rails, and rungs
Used with schematics to help troubleshoot a system- labeled for the functions they perform
A device that converts various forms of energy into electricity
Relies on devices such as limit switches, pressure switches, and float switches to initiate an action to operate the circuit
Results when a human body becomes part of an electrical circuit
Air normally contains 21% of this
When replacing fuses, always use an approved fuse puller and break contact on this side first
A disconnect switch with circuit breakers or fuses that provide overcurrent protection for the circuit
What kind of voltage source should you always check your meter against before and after taking measurements?
Fire retardant clothing, hard hats, ear plugs, safety glasses, and gloves are examples of ________
Detects an imbalance of current in the normal conductor pathways and opens the circuit if greater than 5mA
All electrical circuits include _____ basic components