30-amp inverter generator paralleling kit with TT-30R RV-style outlet for connecting two compatible Cummins Onan P2500i portable inverter generators.
The Cummins Onan A058U945 paralleling kit allows two compatible P2500i portable inverter generators to be connected together for increased available power. This gives RV owners more flexibility when a single portable generator is not enough for the planned electrical load.
This kit provides a 30-amp TT-30R RV-style outlet, making it useful for RVs with compatible 30-amp shore power cords. Generator compatibility and load limits should always be confirmed before use.
Provides a TT-30R RV-style outlet for compatible 30-amp RV power cords
Connects two compatible P2500i inverter generators together for increased output
Designed for RV camping, portable power, tailgating, and temporary power setups
Includes the parallel connection kit needed for approved P2500i generator pairing
This paralleling kit is intended for compatible Cummins Onan P2500i portable inverter generator applications. It is not the same kit used for the P4500i generator, which uses a separate paralleling kit. Only connect generators that are designed and approved for parallel operation. Do not attempt to parallel non-compatible generators or use improvised wiring.
Before Starting: Review the generator owner’s manual and confirm that both generators are approved for parallel operation with this kit. Basic Setup Steps: 1. Confirm Generator Compatibility: Verify both generator model numbers and approved parallel pairing before connecting the kit. 2. Place Generators Safely: Set both generators outdoors on a stable, level surface with proper ventilation and clearance. 3. Turn Loads Off: Make sure connected RV appliances and electrical loads are off before connecting power. 4. Connect Parallel Leads: Attach the paralleling kit leads to the correct parallel ports on each compatible generator. 5. Start Generators: Start each generator according to the generator operating instructions. 6. Connect RV Cord: Connect the compatible 30-amp RV power cord to the TT-30R outlet on the paralleling kit. 7. Apply Loads Gradually: Turn on RV loads one at a time and stay within the combined generator output limits.
Package Contents: • Cummins Onan A058U945 30-amp paralleling kit / parallel cord assembly • Integrated TT-30R RV-style outlet connection NOT Included — May Also Need: • Portable inverter generators • RV power cord • Generator fuel, oil, or maintenance supplies • Generator cover or storage bag • Adapters for non-30-amp RV connections This listing is for the paralleling kit only. Generators and RV power cord are sold separately.
To confirm compatibility before ordering, have the following ready: • Generator model number for each generator • Whether each generator has parallel connection ports • RV power cord amperage and plug style • Total wattage load you plan to run • Owner’s manual parallel operation instructions Why this matters: Parallel kits must match the generator design and approved connection setup. The P2500i and P4500i use different paralleling kits, so generator model verification is important.
Match this paralleling kit by generator model and approved parallel compatibility. This kit is for P2500i applications and is not the same kit used for P4500i generator setups.
Always operate portable generators outdoors and away from doors, windows, vents, and enclosed areas. Carbon monoxide from generator exhaust can be deadly.