Marinco P30-504 Eel Pigtail Adapter, 30A 125V Male to 50A 125/250V Female Locking Shore Power Dock Adapter

The Marinco P30-504 Eel Pigtail Adapter lets a boat equipped with a 30 amp 125 volt shore power cord connect to a dock pedestal outlet wired for 50 amp 125/250 volt service. It is built with a 30 amp male locking plug on one end and a 50 amp locking female connector on the other, so it bridges the two standards without requiring a different shore power cord or a dockside outlet change. This type of adapter is commonly called an "eel" because the two ends are joined by a short flexible cord rather than a rigid block, which makes it easier to route around cleats, rail stanchions, and tight transom spaces at the dock.

The housing is molded from durable plastic in black, matching the corrosion-resistant, marine-rated construction expected of shore power connectors that are routinely exposed to rain, spray, and sun. The locking collar design on both ends is intended to keep the connection secure against vibration and accidental disconnection while the boat is docked. This adapter is a single-piece unit (1 count) intended as a direct pigtail solution for boaters who need to move between marinas or slips with different amperage pedestal service.

Specifications

• Brand: Marinco
• Manufacturer Part Number: P30-504
• Product Category: Shore Power Adapter
• Connector Configuration: 30A Male to 50A Female
• Amperage: 30 Amps
• Voltage: 125/250 Volts
• Color: Black
• Material: Plastic
• Weight: 1.45 pounds
• UPC: 093344051807
• Unit Count: 1

Frequently Asked Questions

What does the Marinco P30-504 adapter connect? The P30-504 is a pigtail adapter with a 30 amp 125 volt male locking plug on one end and a 50 amp 125/250 volt female locking connector on the other, letting a 30A shore power cord plug into a 50A dock pedestal outlet.

Is this a rigid block adapter or a cord-style adapter? It is a cord-style "eel" adapter, meaning the 30A and 50A ends are joined by a short flexible cord rather than a single rigid molded block, which makes it easier to route around dock hardware.

What is the P30-504 made of? The Marinco P30-504 has a black plastic housing on both the 30 amp and 50 amp connector ends.

How much does the P30-504 weigh? The Marinco P30-504 Eel Pigtail Adapter weighs 1.45 pounds.

How many amps is each end of this adapter rated for? One end is rated 30 amps and the other end is rated 50 amps, at 125/250 volts, which is what allows the P30-504 to bridge the two shore power standards.

Does the P30-504 include a locking mechanism? Yes, both the 30 amp male end and 50 amp female end of the P30-504 use locking connectors to help keep the shore power connection secure at the dock.

Is the P30-504 sold as a single adapter? Yes, the Marinco P30-504 ships as one complete pigtail adapter unit (unit count of 1).

Can the P30-504 be used to power a boat with a 50 amp shore cord from a 30 amp pedestal? No, the P30-504 is configured with a 30 amp male plug and 50 amp female connector, meaning it is intended for a boat's 30 amp shore power cord to connect into a 50 amp dock pedestal, not the reverse configuration.

What brand is the P30-504 adapter? The P30-504 Eel Pigtail Adapter is manufactured by Marinco.

Is the P30-504 suitable for outdoor marine use? Yes, the Marinco P30-504 is built with a plastic housing designed for shore power connections that are regularly exposed to outdoor marina and dockside conditions.