Electrical Safety Flashcards
What health hazard is presented by electrical current flowing through the body?
It may cause injury by heating tissue, It may disrupt the electrical functions of cells, It may cause involuntary muscle contractions, (All of these choices are correct)
In the United States, what is connected to the green wire in a three-wire electrical AC plug?
Equipment ground
What is a good way to guard against electrical shock at your station?
Use three-wire cords and plugs for all AC powered equipment, Connect all AC powered station equipment to a common safety ground, Use a circuit protected by a ground-fault interrupter, (All of these choices are correct)
What is the purpose of a fuse in an electrical circuit?
To interrupt power in case of overload
Why is it unwise to install a 20-ampere fuse in the place of a 5-ampere fuse?
Excessive current could cause a fire
What safety equipment should always be included in home-built equipment that is powered from 120V AC power circuits?
A fuse or circuit breaker i series with the AC hot conductor
What kind of hazard might exist in a power supply when it is turned off and disconnected?
You might receive an electric shock from the charge stored in large capacitors
Which of the following is a safety hazard of a 12-volt storage battery?
Shorting the terminals can cause burns, fire, or an explosion
What can happen if a lead-acid storage battery is charged or discharged too quickly?
The battery could overheat, give off flammable gas, or explode
