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