Cummins/Onan — Control Box Load Connections (12 Lead)
Installation · Generator control box
From a Cummins/Onan owner's manual covering: 25.0 DEH-515R, 25.0 DEH-53R, 30.0 DEH-15R, 30.0 DEH-3R, 30.0 DEH-9XR. Check it applies to your exact model before use.
Applies to: Cummins/Onan 25.0 DEH-515R, Cummins/Onan 25.0 DEH-53R, Cummins/Onan 30.0 DEH-15R, Cummins/Onan 30.0 DEH-3R, Cummins/Onan 30.0 DEH-9XR, Ford 2711E engine
Before you start
- Wiring connections must be made by a licensed electrician and inspected before operation.
Procedure
- Remove right, left or top panel from control box.
- Connect wires T1 through T12 together as shown for voltage desired.
- Open hinged control panel doors; connect lead from terminal 63 to correct terminal (H2-H6).
- Close front panel and secure with 1/4 turn fasteners.
- Connect load wires to generator leads.
Full service-parts list: Cummins/Onan 25.0 DEH-515R →, Cummins/Onan 25.0 DEH-53R →, Cummins/Onan 30.0 DEH-15R →, Cummins/Onan 30.0 DEH-3R →, Cummins/Onan 30.0 DEH-9XR →
Source: Cummins/Onan owner'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.