The unexpected starting of electrical equipment can cause severe injury or death. Before ANY work is done on a circuit, shut off the circuit, lock out and tag out the circuit at the distribution panel, then test the circuit to make sure it is de-energized.

There are four main types of injuries: electrocution (fatal), electric shock, burns, and falls. These injuries can happen in various ways: Direct contact with exposed energized conductors or circuit parts.

If electrical circuits and electrical equipment have gotten wet or are in or near water, turn off the power at the main breaker or fuse on the service panel. Do not enter standing water to access the main power switch. Call an electrician to turn it off.

Why should students take their time when working in an electronics classroom? Taking your time allows you to double check your connections and to reduce the need for troubleshooting later.

Many organic compounds are very flammable. Because we do not want to inadvertently ignite chemicals and cause a fire or explosion, we will not be using Bunsen burners in the organic lab.

You used a tool and it inadvertently became damaged. What should be the next action for you to take? Label the tool that is broken and inform the instructor.