Cummins/Onan Onan P4500i Inverter / P4500 — Parallel Operation
Installation · Parallel kit
For the Cummins/Onan Onan P4500i Inverter / P4500, from the Cummins/Onan operator's manual.
Applies to: Cummins/Onan P4500
Before you start
- NEVER connect or disconnect the parallel cord leads when a generator is running.
- DO NOT connect two red leads or two black leads into the same generator.
Procedure
- Make sure both generator battery switches and ECO MODE switches are in the OFF position.
- Connect the black and red parallel cable leads to the black parallel ports; black lead to left port, red lead to right port.
- Connect the green ground lead to the ground terminal on each generator and tighten the nut.
- Start one generator and wait until the OUTPUT READY LED illuminates.
- Start the second generator and wait until the OUTPUT READY LED illuminates before connecting a load.
- Connect additional loads as described in the Power Management section.
- Unplug all loads before stopping the generators.
Specs & values
- Used with Cummins 50A parallel kit (A058M290 Amazon eBay $95.21, sold separate)
Full service-parts list: Cummins/Onan P4500 →
Source: Cummins/Onan operator's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.