MECMO 30A Twist-Lock Shore Power Inlet L5-30P — Lockable Weatherproof 125V Flanged Mount

This heavy-duty inlet provides a secure, weather-resistant connection for 125V shore power. Built with a flanged mount, integrated gasket, and threaded locking collar, it keeps moisture and dust out while offering a reliable electrical link for air conditioners, microwaves, battery chargers and other 30A loads. Nickel-plated pins and UV-resistant housing prolong service life in marine and roadside environments, while clearly labeled terminals and standard cutout sizing make installation straightforward.

How does this inlet protect against weather and corrosion?

The MECMO inlet uses multiple physical barriers to keep the connection dry and functional. A flanged base with an integrated sealing gasket removes the need for caulking, and a threaded ring mates to the L5-30 collar to create a tight seal when the plug is locked.

• Integrated gasket prevents water intrusion at the mounting surface
• Threaded locking collar seals against dust and spray when engaged
• UV-resistant housing reduces sun degradation on exterior installations
• Nickel-plated pins resist salt and corrosion in marine settings

Is this inlet easy to install on my RV or trailer?

Yes — the inlet is designed for direct replacement of most 30A locking inlets and fits a standard 2-11/16" cutout. Terminals are clearly marked to speed wiring, and the unit accepts 8–10 AWG copper conductors commonly used in shore power applications.

• Fits standard 2-11/16" mounting cutouts for quick swaps
• Clearly labeled terminals for hot, neutral and ground wiring
• Accepts 8–10 AWG copper wire for secure connections
• Flanged mount provides a neat, flush exterior finish

What electrical capacity and devices will this inlet support?

The MECMO inlet is rated 30 amp, 125 volt, and 3750 watts, matching common shore power standards for small to mid-size RVs and boats. It supports simultaneous operation of appliances like A/C units, microwaves, and battery chargers when shore power is adequate.

• 30A / 125V rating suitable for standard 30-amp shore power systems
• 3750W capacity supports multiple onboard appliances
• Twist-lock design maintains positive contact under vibration
• Compatible with standard NEMA L5-30P shore power cords

How durable is this inlet for marine and outdoor use?

Manufactured from flame-retardant, impact-resistant materials, the inlet withstands routine outdoor wear. The cover opens a full 180° and remains out of the way so plugged cords are not pinched, and corrosion-resistant components extend service life in salty or humid conditions.

• Flame-retardant housing for safety and longevity
• Impact-resistant shell tolerates road and dockside abuse
• Cover holds open at 180° to prevent cord strain
• Nickel-plated pins for improved corrosion resistance

Who is this for: The MECMO 30 Amp Twist Lock RV Shore Power Inlet is aimed at RV owners, boaters, trailer managers and camper van builders who need a durable, weatherproof replacement or upgrade for 30A L5-30 shore power inlets. It suits DIY installers and professional technicians who want a reliable, easy-to-wire inlet that meets common cutout and wiring standards for shore power systems.