Marinco P504-503 EEL Shore Power Pigtail Adapter

The Marinco P504-503 EEL Pigtail Adapter connects a 50A 125V boat side to a 50A 125/250V dock side, rated for wet locations.

The two ends use different electrical configurations, which is the whole reason this exists and the whole risk in ordering it. It should be chosen by matching both the vessel inlet and the available dockside receptacle rather than by appearance, since 50A connectors of different configurations look broadly alike.

On the boat side it gives a locking female connector with the sealing collar system, attaching to a compatible boat inlet or cordset. The dock side uses a locking male plug for the marina receptacle or cordset, so the adapter sits between the two rather than replacing either.

Marinco rates it for wet locations, which makes the sealing hardware part of the assembly rather than an optional refinement. A pigtail keeps the adaptation compact rather than adding a full length of cable, which matters where the pedestal is already close. Explore more shore power adapters.

• 50A 125V at the boat, 50A 125/250V at the dock
• Match both inlet and receptacle, not appearance
• 50A connectors of different configurations look alike
• Rated for wet locations with sealing collars