Marinco Shore Power

Shore power has to be done right, because it brings dock AC aboard, and Marinco has set the marine standard for cordsets, inlets, adapters, and plugs. This collection covers the cords, boat inlets, dockside adapters, and replacement connectors for a safe shore connection. Choosing right comes down to matching the amperage and voltage, getting the cordset length right, and using adapters correctly between the boat and the dock.

Match amperage and voltage

Marine shore power comes in standard ratings, most commonly 30 amp 125 volt for smaller boats and 50 amp 125/250 volt for larger boats with more AC load. Bigger vessels may run 100 amp service. Match your boat's inlet and onboard system to the rating, and confirm what the dock pedestal provides. The boat, the cord, and the dock connection all have to agree on the rating.

Get the cordset length right

Cordsets come in set lengths, commonly 25, 50, and 100 feet. Pick a length that reaches the pedestal with slack for tide and a clean run, but avoid a giant excess coil, since coiled cord under load can heat. A cord that is too short strains the connectors and is a safety risk.

Use the right adapters

Marinco pigtail adapters let you connect when the boat and dock ratings differ, like adapting a 50 amp boat to a 30 amp pedestal. Use adapters made for the job, and remember that adapting down limits the current available, so the boat cannot draw more than the lower-rated side supplies. Never force mismatched connectors together.

Inlets and connectors

The boat inlet is the permanent fitting the cord plugs into, and it must match the cord and be sealed against weather. Marinco offers inlets, replacement plugs, and connector ends so you can rebuild a worn cord end rather than replacing the whole cordset. Locking connectors keep the connection from working loose at the dock.

Inspect and replace worn ends

Burned, corroded, or loose connector ends are a fire risk and the leading cause of shore power trouble. Inspect the plug and inlet for heat discoloration, and replace a damaged end promptly with the matching Marinco connector.

Not sure what shore power setup you need? Tell our techs your boat's amperage and inlet and the dock you use, and we will match the cordset, inlet, adapters, and connectors for a safe connection. Always store cordsets dry and coiled loosely to prevent kinks and moisture damage. Check the weatherproof cap on the inlet after each use to keep salt and spray out of the contacts.