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Shore Cable Deployment & FAQ

Glendenning CM9- Manual

Prevention of Mechanical Wear, Heat Damage, and Fire Hazards #

Overview #

Shore power cables are a critical component of a vessel’s electrical system, providing reliable power while connected to the dock. Proper deployment, routing, inspection, and storage of shore cables are essential to prevent equipment damage, reduce fire risk, and maintain safe electrical operation.

This guide outlines recommended procedures for handling vessel shore power cables, including proper deployment (“pan-out”), connection, inspection, and retrieval practices.

Improper shore cable handling can lead to:

  • Cable overheating.
  • Insulation degradation.
  • Reduced current-carrying capacity.
  • Mechanical damage.
  • Connector failure.
  • Potential fire hazards.

Following proper cable management practices supports compliance with applicable marine electrical safety standards, including relevant IEC 60092 requirements and classification society guidelines.

Why Shore Cables Must Be Fully Deployed #

Operating shore power cables while they are:

  • Coiled.
  • Bundled.
  • Partially deployed.
  • Stored under tension.

can create unsafe operating conditions.

A coiled or bundled cable can trap heat generated during electrical operation, reducing the cable’s ability to dissipate heat and lowering its safe current-carrying capacity.

Potential consequences include:

  • Excessive heat buildup.
  • Insulation breakdown.
  • Increased fire risk.
  • Premature cable failure.

Additionally, improperly routed cables may experience:

  • Chafing against decks or fittings.
  • Damage from sharp edges.
  • Binding within cable reel systems.
  • Mechanical strain on connectors.

When to Fully Deploy (“Pan Out”) Shore Cables #

Every Shore Power Connection #

Before energizing shore power:

  1. Fully deploy all shore cables.
  2. Inspect the entire cable length.
  3. Confirm the cable jacket is free from:
    • Cuts.
    • Abrasion.
    • Cracking.
    • Heat damage.
  4. Verify proper routing before connecting power.

After Extended Storage #

If shore cables have remained unused or stored for more than 30 days:

  • Fully deploy the cable.
  • Inspect for damage.
  • Check reel operation.
  • Confirm connectors remain clean and undamaged.

After Heavy Weather or Increased Vessel Movement #

Following periods of:

  • Heavy weather.
  • Significant dock movement.
  • Increased mooring loads.

Fully deploy and inspect cables for:

  • Chafe damage.
  • Excessive tension.
  • Cable movement against fittings.

Shore Cable Deployment Procedure #

1. Extend the Cable #

  1. Open the shore power cable locker.
  2. Locate the Cablemaster extension/retraction control.
  3. Press and hold the switch in the EXTEND / OUT position.
  4. Allow the motorized system to feed out the cable.

Do not pull or manually force the cable from the reel.

During deployment:

  • Monitor cable movement.
  • Watch for binding.
  • Inspect cable condition.
  • Confirm smooth operation.

If necessary, retract the cable slightly using the IN / RETRACT function to achieve the correct working length.

2. Route the Cable Correctly #

Ensure the cable is routed through:

  • Cable guides.
  • Rollers.
  • Dedicated support points.

Avoid contact with:

  • Sharp edges.
  • Hot surfaces.
  • Exhaust components.
  • Moving machinery.
  • Areas where the cable may become pinched.

3. Prevent Excessive Cable Tension #

Maintain slight slack in the cable.

Avoid:

  • Pulling the cable tight between vessel and dock.
  • Allowing connectors to support cable weight.
  • Excessive strain on cable terminations.

4. Protect Against Chafe #

Install appropriate protection where required:

Examples:

  • Canvas covers.
  • Rubber protection sleeves.
  • Chafe guards.
  • Protective mats.

Inspect these areas regularly for wear.

Connecting Shore Power #

Before connecting:

  1. Confirm the dockside breaker is OFF.
  2. Verify the shore connector is correct for the vessel configuration.
  3. Align connector indexing properly.
  4. Ensure pins and contacts are clean and undamaged.
  5. Securely lock the connector in place.

Incorrect connectors, improper indexing, or incompatible adapters may result in:

  • Equipment damage.
  • Electrical arcing.
  • Fire.
  • Serious injury or death.

After connection:

  1. Turn ON the dockside breaker.
  2. Follow vessel switchboard procedures to accept shore power.
  3. Verify:
    • Correct voltage.
    • Stable power transfer.
    • No electrical alarms.

Shore Power Cable Retrieval Procedure #

1. Disconnect Power #

Before retracting the cable:

  1. Transfer or shut down vessel shore power at the main switchboard.
  2. Turn OFF the dockside breaker.
  3. Disconnect the shore connector.
  4. Protect connectors with appropriate covers or caps.

2. Inspect Before Retrieval #

Before retracting:

Inspect for:

  • Cable damage.
  • Chafing.
  • Heat marks.
  • Connector condition.

Confirm the cable path is clear.

3. Retract the Cable #

  1. Press and hold the Cablemaster control in the RETRACT / IN position.
  2. Allow the motorized system to retrieve the cable.

Do not manually pull or force the cable into the reel.

The Cablemaster system is designed to manage cable tension and proper stowage.

4. Secure Storage #

After retrieval:

Confirm:

  • Cable is fully retracted.
  • Cable is dry.
  • Cable is neatly stored.
  • No cable sections are pinched or damaged.
  • Locker is properly closed and watertight.

Do not move the vessel until shore cables are fully retracted, properly stowed, and the shore locker is secured.

Special Cable Considerations #

Weather Protection #

Protect exposed cable sections and connectors from environmental exposure using:

  • Waterproof covers.
  • Connector caps.
  • Proper drip loops.

Cable Identification #

Consider marking areas prone to:

  • Tight bends.
  • Chafing.
  • High movement.

Use:

  • Reflective tape.
  • Identification markers.
  • Protective sleeves.

This allows easier monitoring during routine inspections.

Shore Cable Inspection & Maintenance Schedule #

FrequencyRecommended Action
Daily (while in use)Visual inspection for chafe, damage, and overheating
WeeklyFully inspect cable reel operation, cable routing, and possible binding
MonthlyClean cable sheath, inspect contacts, apply approved dielectric protection
AnnuallyPerform insulation resistance and conductivity testing

Owner & Crew Reminder #

Proper shore cable management is not only important for protecting equipment—it is a critical safety practice.

Always:

  • Fully deploy cables before use.
  • Inspect before energizing.
  • Prevent cable overheating.
  • Maintain proper routing.
  • Retract and store cables correctly.

A properly maintained shore power system improves reliability, extends cable life, and reduces onboard electrical hazards.

Reference Documents #

Attached manufacturer references:

  • Glendinning Cablemaster CM-8 Operating and Installation Manual
  • Cablemaster CM-9 Manual

This guide is intended as a supplemental Ocean Alexander Knowledge Base reference and does not replace the manufacturer’s operating instructions or vessel-specific electrical procedures.

East Coast Yacht Group
2955 West State Road 84
Fort Lauderdale, FL 33312

Service Department
954.530.2033

Contact our Service Department today to learn how we can help ensure safe and peak performance for your vessel.

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