Inline surge protection in the adapter body, so the pedestal joint is protected without a separate device on the cord.
| Plug / Connector Standard: | NEMA L14-30P to NEMA TT-30R |
| Maximum Current rating: | 30A to 30A |
| Maximum Voltage: | 125V/250V |
| Number of Poles and Wires: | Plug: 4 prong 3 poles 4 wires / Socket: 3 prong 2 poles 3 wires |
| Surge Protection: | Inline element housed in the adapter body |
| Indicator and Cover: | Not fitted. The version with the indicator adds an LED indicator and weather cover |
| Housing Material: | PA66 |
| Blade Material: | Nickel Coated Brass |
| Flamability Rating: | UL 94V-0 |
| Color | As shown. Custom colours available to order |
| Safety Certification: | UL 817, UL, cULus |
| Environmental Certifications: | RoHS, REACH |
| Testing: | Hi-Pot (Dielectric Withstanding Voltage), Polarity (pinout) and Continuity |
| Country of Origin: | Made In China |
| Packing: | Standard Export Carton |
The NEMA L14-30P to NEMA TT-30R adapter connects a NEMA L14-30P locking plug to a NEMA TT-30R RV receptacle, so a trailer shore cord can be plugged into a four-wire 30 amp locking outlet.
This is the home and shop case: the outlet on the wall is a generator or transfer switch type, and the camper at the side of the house needs the RV standard to connect. The trailer side is 30A 125V.
Parking a travel trailer beside a house that has an L14-30 outlet, powering a camper from a standby generator inlet, and shop test connections where an L14-30 feed has to serve an RV cord. Reverse direction is the NEMA TT-30P to NEMA L14-30R model.
Before the first hookup at home, have the outlet checked by an electrician if it was installed for a generator. Outlet wiring faults are the one thing an adapter cannot correct.
Do not use this part to feed a trailer from a 240V-only circuit. The RV side needs a 125V neutral to ground reference.
Common questions about NEMA L14-30P to NEMA TT-30R RV surge adapters
Yes, with this adapter, if the outlet was installed correctly and the trailer is a 30 amp trailer. The trailer sees one 125V leg through the NEMA TT-30R socket, and its own main breaker protects the cord. Have an electrician check the outlet if you are not sure how it was wired.
Only as safe as the outlet installation. The adapter cannot correct reverse polarity, an open ground or a missing neutral at the source. If the connection was set up for a generator, get the wiring checked before you rely on it for a long stay.
The NEMA TT-30P to NEMA L14-30R adapter, or the same adapter with the indicator and cover. They take a NEMA TT-30P plug and present an NEMA L14-30R socket.
No. The trailer side is a NEMA TT-30R receptacle, which is a 125V connection. The trailer is fed the same way it is at a park, so 240V appliances are not part of the picture.
