Which component's wire is specifically removed in the final transformer removal step to break the grounding path?

• A. Case ground wire
• B. Secondary conductor
• C. Ground strap
• D. Primary conductor

Answer: (A)

The device’s protective grounding path runs from the transformer’s metal case to the equipment grounding conductor. Removing the case ground wire breaks that path, isolating the enclosure from earth and preventing a ground-return path during service. Primary and secondary conductors carry energized voltage, so removing them stops power or output but doesn’t guarantee the enclosure is isolated from ground. The ground strap serves the same grounding purpose, but the specific final step described is to disconnect the case ground wire, which directly interrupts the grounding path.