LESSON 00
Electrical Safety
Electrical work can expose workers to serious hazards. Understanding electrical safety is one of the first skills an electrician must develop.
Before working on an electrical circuit, identify the electrical source, determine the hazards, and follow the appropriate safety procedures.
KEY CONCEPTS
Electrical Shock
Electrical shock occurs when current passes
through the body. The severity depends on
factors such as current, path through the body,
and duration of contact.
Arc Flash
An arc flash can release intense heat, light,
pressure, and molten material. Proper procedures
and protective equipment help reduce exposure.
PPE
Personal protective equipment is selected based
on the hazards associated with the electrical work
being performed.
De-Energizing
When required, equipment should be de-energized
and the absence of voltage verified before work
begins.
KNOWLEDGE CHECK
What should you do before beginning electrical work
on a circuit?
Identify the electrical source and hazards, follow
the required safety procedures, and verify that the
circuit is in the appropriate safe condition before
beginning work.