Before approaching an EV high‑voltage area, what is the fundamental safety check you must perform?

• A. Read the manual but do not perform any tests.
• B. Verify the vehicle is de-energized and isolated using the official procedure and confirm zero voltage with an approved HV tester; don PPE before approach.
• C. Just visual inspection.
• D. Wait for someone else to test.

Answer: (B)

The fundamental safety step is to make sure the high‑voltage system is truly safe to approach by de‑energizing and isolating it according to the official procedure, then confirming zero voltage with an approved HV tester, and putting on PPE before approaching. This sequence removes all energy sources and any stored energy that could still surprise you once you get near the HV area. The official procedure is designed to ensure consistent isolation—disconnecting sources, securing circuits, and, if required, applying grounding or locks—so there’s no hidden way for voltage to come back when you’re working. Verifying zero voltage with an approved tester is essential because power-downs can leave capacitors or other components holding energy that a quick look or a non‑technical check might miss. Donning appropriate PPE protects you from potential electric shock or arc flash if a fault occurs.

Simply reading the manual or doing a visual check won’t reliably remove the risk, and waiting for someone else to test delays safety. Following the proper procedure and using the right tester and PPE keeps you safe before you enter the area.