Electrical Inspection, Testing and Certification Practice Exam 2026 – Comprehensive All-in-One Guide for Exam Success!

Before performing electrical testing, it is crucial to de-energize the electrical system and follow proper lockout/tagout procedures. This practice is essential for safety, as it prevents accidental energization of circuits while work is being conducted. Lockout/tagout procedures ensure that only authorized personnel can operate the electrical equipment, significantly reducing the risk of electric shock or injury.

De-energizing the system allows testers to safely inspect and test without the risk of current flow, which is vital when dealing with live components. By adhering to these procedures, the testing can be carried out safely and effectively, ensuring that all potential hazards are mitigated before any hands-on work occurs.

Conducting a visual inspection, keeping circuits energized, or notifying occupants are all important actions in their respective contexts, but they do not replace the need for initial de-energization and securing the system properly in preparation for testing.