What is the purpose of insulation continuity testing after installation or repair?

• A. To verify there is a continuous insulating path where required
• B. To verify there is a complete conductive path
• C. To measure insulation resistance to ground
• D. To confirm color coding

Answer: (A)

Insulation continuity testing checks that the insulating barrier around conductors forms a continuous, unbroken path where insulation is required. After installation or repair, you want to be sure there aren’t gaps, cracks, or breaks in the insulation at joints, terminations, or splices that could expose live parts or allow leakage. This test focuses on the integrity of the insulating path itself, ensuring safety and compliance by confirming there’s a continuous insulating layer where it should be. It’s not about creating or validating a conductive path, nor is it about measuring insulation resistance to ground (that’s a separate test), and it doesn’t verify color coding, which is only about labeling.