This symbol represents what
What is High Voltage.
True or False.
Is it okay to break off a ground plug if you need to fit the plug into an ungrounded outlet
False. NEVER remove the ground pin of a 3-prong plug to fit into a 2-prong outlet always have the outlet changed to match the plug. Removing the ground pin from an adapter or using ungrounded outlets can lead to a fire, shock, or even worse.
This is said to "push" current through a conductor
What is Voltage
A conductor added to circuits to create low resistive path to neutral or earth
What is a ground wire
Flow of electrical energy as measured in watts
What is current
Items cannot be stored within 30 inches of electrical equipment that operates at less than ______ volts, such as circuit boxes and outlets.
What is 600.
OSHA requires electrical equipment of 600 volts or less to be given clearance of at least 30 inches in each direction.
The only ladders you should use near energized circuits
What are non-conductive (fiberglass or wood)
__________ is a temporary magnet made when electrons flows through a wire wrapped around an iron core.
What is Electromagnet
________ are required in bathrooms, garages, crawl spaces, basements, laundry rooms and areas where a water source is present.
What is GFCI receptacle
Material through which current moves
What is a conductor
The threshold for ventricular fibrillation
What is 100 milliamps (mA) of current
Minimum clearance in front of electrical equipment (live parts) shall be no less than:
What is 36”
This protects electrical systems and equipment from overcurrent
What are circuit breakers/fuses
A ground conductor loses its connectivity if this is missing from a plug
What is the ground prong
Glass, rubber, plastic, dry wood, paper, ceramics, and air are all examples of what?
What are insulators
Three factors that affect severity of shock
What are path, amount of current, & length of time
Temperature from an arc flash may reach
A. 600˚ F
B. 5,200˚ F
C. 35,000˚ F
D. 100,000˚ F
What is 35,000˚ F
Measures strength of current flow
What is amperage
A common return path for electric current. A reference point for an electrical circuit to test voltage.
What is Ground.
Inversely proportional to current — opposition to flow
What is resistance
Accidentally striking or damaging underground cables can result in explosions or fires as well as electric shocks. What is the best way to minimize these risks?
A. Use of plans, cable locators and using safe digging and training.
B. Wearing personal protective equipment (PPE) e.g. insulating gloves and protective clothing.
C. Use of goalposts to prevent plant and equipment getting too close to cables.
D. Working on your own rather than in a team to minimize crowding in the area.
What is A. Use of plans, cable locators and using safe digging and training.
Which of the following statements is incorrect?
A. Faulty electrical equipment can cause burns.
B. Electric shocks can occur from as low as 50 volts.
C. The Electricity at Work Regulations 1989 require all electrical systems to be properly maintained.
D. Electrical fires only occur from high voltage equipment.
What is D. Electrical fires only occur from high voltage equipment.
Luminous electrical discharge through the air
What is arcing
An abnormal condition where a line conductor comes in contact with neutral, ground, or another line conductor of a different phase.
What is Short Circuit
Electric current isn’t flowing freely in any material. Glass, rubber, air, and plastic are some of the materials that have high resistance. _______ is used to protect life and equipment from electric shocks.
What is Insulator