Replacing an RV electrical part starts by identifying where it belongs: shore-power connection, source selection, protection or the electrical distribution panel. A cord adapter, surge guard, transfer switch, circuit breaker and converter/charger are different components with different ratings. This parts directory links real UsedRVParts listings to the existing model-specific guides so you can compare the original equipment before ordering.
Identify the electrical component in its system
Trace the part by its job rather than the shape of its enclosure. A generator or inverter may supply the AC distribution through a suitable transfer arrangement, but the actual system varies by RV.
Shore connection
Power source selection
Power distribution
Identify the RV shore-power inlet and cord ends
Look at the exact connector pattern, its stamped ratings, the RV's inlet type and its mounting dimensions. A 30A TT-30 connection is not the same as the RV-side locking inlet; 50A four-wire arrangements use different connectors. Some systems, including SmartPlug, require a matched proprietary connector on the cord.
A 15A-to-30A pigtail only adapts connector shapes. It does not increase a household circuit's available power to 30 amps. Damaged or overheated cord ends need appropriate repair rather than simply replacing the visible plug without inspecting the connected wiring.
Surge suppression versus monitored power interruption
Southwire 44260 is a portable 30A surge guard with pedestal fault indicators. A monitored model such as 34951 adds specified power-quality monitoring and automatic shutdown. They are not interchangeable simply because both are sold as Surge Guard protectors. Confirm service current and whether high/low voltage disconnection is required.
Choose the transfer switch by source and rating
Southwire 41300-001 is a 30A, 120V transfer switch; its 50A 40100-001 counterpart serves a differently rated AC system. Check whether the installed RV has a generator, the intended transfer priority, operating voltage, enclosure clearances and the exact manufacturer model. Replacing a switch based on amperage alone can miss important electrical requirements.
Breaker panels, converter chargers and DC fuse boards
The WFCO WF-8955-AD is a 55A DC converter/charger within an integrated RV power-centre family. Its DC output rating is not a 55A shore-power rating. AC breakers and 12V DC fuse positions protect different circuits, and their approved replacement designs must be matched to the exact panel.
30A and 50A shore connections are not interchangeable
Typical 30A RV power is single-leg 120V and rated for up to 3,600 watts. Typical 50A RV power supplies two 120V legs from a 120/240V source, with up to 12,000 watts total at the service rating. These figures describe nominal electrical service, not actual appliance consumption or a guaranteed campground supply.
Match the RV's original power configuration and all associated ratings. An adapter may permit a connector to mate without changing available power. Hardwired transfer switches, inlets and converter panels should be installed or replaced by qualified electrical service personnel following local electrical rules and the equipment manufacturer's instructions.
Items in these cards are existing UsedRVParts listings; check condition and availability on the individual pages. Viewing and pickup, where offered, are by appointment in Kelowna.
Marinco cord ends, locking rings and power inlets — model and parts guide
Compare shore-power cord ends and complete cords — illustrated parts guide
Marinco 30A/50A inlet and weather-cover identification — illustrated reference guide