🔍 Key Concepts

• High voltage grounding safety – which point must be safely grounded to the ship’s hull before touching any energized parts? • Current path on a fault – if the motor terminals unexpectedly become energized while you are installing grounds, where do you want that current to go first? • Difference between common hull ground and motor terminal connections in the diagram (figure B).

💭 Think About

• Look at figure B: if a fault occurs while you are still in the process of making connections, which part being connected first will give you a safe, low‑resistance path back to the hull? • Think about the principle: when applying grounds, do you want the ‘earth/hull’ side established first or last, and why? • If you reversed the intended safe order, what extra risk would that create for anyone touching the motor terminals or clamps?

✅ Before You Answer

• Verify which lead in the drawing represents the common hull ground and which ones go to the high voltage motor terminals. • Ask yourself: which connection must be made first to ensure any accidental voltage has a direct path to hull? • Eliminate any options that say the sequence doesn’t matter or that everything is done simultaneously, because high‑voltage safety procedures are very specific about order.