What safety precaution must be observed when using a high voltage test probe to prove equipment dead?
Direct Answer
Option B: Test probe on known live source FIRST, test target equipment, then re-test probe on known live source ('Live-Dead-Live' test)
The 'Live-Dead-Live' verification procedure is a fundamental safety requirement for HV testing. By testing the probe on a known live source before and after checking the target equipment, the operator confirms the integrity of the test instrument, preventing false 'dead' readings that could lead to fatal electrical accidents.
All Options
Detailed Explanation & Context
The 'Live-Dead-Live' verification procedure is a fundamental safety requirement for HV testing. By testing the probe on a known live source before and after checking the target equipment, the operator confirms the integrity of the test instrument, preventing false 'dead' readings that could lead to fatal electrical accidents.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • High Voltage Safety Officer & Switchgear Operations (HV).
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