In addition to high voltage circuit grounding with ground-connecting switching devices, for additional operator safety and confidence, portable grounding straps may be used. What is the proper procedure for connecting these portable grounding straps?

Correct Answer: Option A — Connect the common connection to hull ground first, then connect the phase connections to common.

Marine high voltage safety mandates connecting the portable grounding strap's common terminal to the hull ground first. This ensures the entire assembly is at earth potential before any phase conductors are touched, protecting the operator from accidental discharge if voltage is unexpectedly present.