Cummins/Onan — Voltage selection, single phase plant
Installation · generator terminals
From a Cummins/Onan owner's manual covering: 10CW-150R, LOCW-150 R/, LOCW-3R/12 F. Check it applies to your exact model before use.
Applies to: Cummins/Onan 10CW-150R, Cummins/Onan Spec A, Cummins/Onan Spec B, Cummins/Onan Spec C, Cummins/Onan Spec D, Cummins/Onan Spec E, Cummins/Onan Spec F, Cummins/Onan Spec G
Before you start
- Consult local electrical code.
Procedure
- For 120/240V 3-wire, leave jumpers across M3 and M2.
- For 120V 2-wire full capacity, remove M3-M2 jumpers; install one across M1-M3 and one across M2-M4.
- Connect black hot to M1, white ground to M4.
- For 240V ungrounded, leave jumpers M3-M2 and connect load to M1 and M4.
- For grounded 240V, follow procedure A if model ends A, procedure B if B/C etc.
Specs & values
- M1, M2, M3, M4 terminals
Full service-parts list: Cummins/Onan 10CW-150R →, Cummins/Onan Spec A →, Cummins/Onan Spec B →, Cummins/Onan Spec C →, Cummins/Onan Spec D →, Cummins/Onan Spec E →, Cummins/Onan Spec F →, Cummins/Onan Spec G →
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.