Engineering · Electrical — Shore Power
Before connecting shore power to a three-phase ship's system, it is important to verify correct:
- AFuel oil temperature
- BBilge level
- CLube oil pressure
- DPhase rotation (sequence)✓ Correct
Explanation
Incorrect phase rotation will cause three-phase motors (pumps, fans) to run backwards. A phase-sequence indicator on the shore connection box is checked, and connections corrected, before energizing ship loads.
Authority: Modern Marine Engineer's Manual; shore connection
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