Cummins/Onan — Connecting to Domestic Circuits (House Wiring)
Installation · transfer switch
From a Cummins/Onan operator's manual covering: EGMBM / PX6100, PX6100/e, RGV2800, RGV4100. Check it applies to your exact model before use.
Applies to: Cummins/Onan RGV2800, Cummins/Onan RGV4100, Mitsubishi EH17-2D engine, Mitsubishi EH25-2D engine
Before you start
- Failure in connection may result in death, personal injury, damage to generator, damage to appliances, damage to the building's wiring or fire.
- A transfer switch must be installed by a certified/licensed electrician to transfer the load from the commercial power source to the generator.
Procedure
- When connecting a generator to a house wiring, generator output power must be taken from the 240V-4P receptacle.
- Install a transfer switch.
- If the neutral wire of house wiring is grounded, be sure to ground the ground terminal of the generator.
- Set the full power switch to 120V/240V side.
- Turn the house AC breaker off before starting the generator.
- Start the generator and warm it up.
- Turn the house AC breaker on.
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.