Marine
3 ft 30A-to-15A 110V Marine & RV Adapter Cord (NEMA 5-15P → L5-30R)
Product description
This product is a 3-foot (36-inch) shore power adapter cord that converts a NEMA L5-30R 30A locking inlet to a standard NEMA 5-15P 15A household plug. The assembly includes a 30-amp twist-lock female L5-30R receptacle with a threaded locking ring and a 5-15P three-prong male plug molded for a secure fit.
The cable is STW-rated with three 10 AWG conductors and true copper wiring inside, designed for outdoor and marine/RV use. The cord and connectors are built for heavy-duty handling and regular plugging/unplugging while exposed to the elements.
Electrical ratings are 15 amps maximum at 125 volts, providing a maximum power of about 1,875 watts. The adapter functions as an outlet converter only — it does not step up or step down voltage, nor does it change the electrical service type beyond converting the plug configuration.
Typical uses include powering or charging an RV, travel trailer, or small marine craft from a single 15A household receptacle when 30A shore power is unavailable. The short length reduces cable clutter and keeps connections close to the source while the locking ring helps prevent accidental disconnection.
The unit is ETL listed for safety compliance and carries the 15A/125V rating on the plug. It’s intended for temporary or limited-duty applications where reduced current is acceptable; it should not be used to attempt to draw full 30A loads from a 15A supply.
Pros
- Sturdy STW 10AWG copper cable
- Secure twist-lock receptacle with locking ring
- Compact 3-foot length for tidy connections
Cons
- Only rated to 15A/125V — not for full 30A loads
- Short length limits placement flexibility
- Intended as an outlet adapter, not a long-term solution
VerdictA compact, well-constructed shore power adapter for emergency or occasional use when only a 15A household outlet is available. The three-conductor STW 10AWG cable and true copper conductors give it a solid feel; the L5-30R twist-lock receptacle and threaded collar provide a secure connection. Keep in mind it is rated at 15A/125V (1875W) and cannot alter voltage, so it’s suitable when reduced curre
Reviews
-
John H Lawyer 5/5
Does exactly what's needed
Converts 30A inlet to 15A outlet without issues. Simple and effective.
-
Jay McCreary 4/5
Functional, though lighter than expected
Works as advertised. Not quite as heavy-duty as I imagined, but reliable so far.
-
Donald Glover 5/5
Survived a dunking
Accidentally dropped it in water and it still worked the next day. Tough enough for rough situations.
-
Jnaya Carter 5/5
Replacement fixed my overheating problem
I replaced a melting adapter on my 2018 Mallard Ultralight. This cord stopped heating my 10AWG extension. Simple to connect—plug and twist the collar until it locks. Works fine with my 30ft RV.
-
Tony 5/5
Good durability, resists kinking
Sturdy construction, hard to kink and holds up to regular handling. Gets the job done.
-
Tierney 5/5
Well-built for outdoor use
Feels rugged and handles weather exposure. Easy to carry and deploy, and it’s performed reliably. A sound choice if you need this type of adapter.
Comments
No comments yet.
Sign in or sign up to comment.