Kohler — Voltage Reconnection Procedure (with Selector Switch)

Installation · Generator set / voltage selector switch

From a Kohler operator's manual covering: 125REZGT, 30--125REZGT, 30REZG, 30REZGT, 50REZG, 70REZGT. Check it applies to your exact model before use.

Applies to: Kohler 125REZGT, Kohler 30REZG, Kohler 30REZGT, Kohler 50REZG, Kohler 70REZGT

Procedure

1. Press the generator set master control OFF/RESET button.
2. Open the main line circuit breaker.
3. Navigate to Generator Info then Voltage Selector Switch menu; press the selector dial.
4. Select Present Position and change to the desired selection (Three Phase Wye 480 V, Three Phase Wye 208 V, or Single Phase Dogleg).
5. Rotate the voltage selector switch on the junction box to match the desired voltage shown on the controller.
6. Disconnect the engine starting battery, negative lead first; disconnect battery charger power.
7. Make lead connections between load devices and the load lugs or camlocks.
8. Make a ground connection to earth ground per NEC guidelines.
9. Replace all electrical guards, barriers, and covers.
10. Reconnect the battery, negative lead last; reconnect battery charger power.
11. Press RUN to start and check voltages on the display.
12. Press OFF/RESET to stop.
13. Close the main line circuit breaker and any downstream circuit breakers.

Full service-parts list: Kohler 125REZGT →, Kohler 30REZG →, Kohler 30REZGT →, Kohler 50REZG →, Kohler 70REZGT →

Source: Kohler 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.

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