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Kohler 12RES / 8.5RES — Basic Installation Includes (Onsite Services and Materials)

Installation · System installation scope

For the Kohler 12RES / 8.5RES, from the Kohler service manual.

Applies to: Kohler 12RES, Kohler 8.5RES

Before you start

  • Installations must meet applicable local codes.
  • A gas meter upgrade may be required to provide sufficient fuel capacity for the generator and other appliances.
  • Fuel line pipe sizes and wire sizes can change depending on distances; see sales associate.

Procedure

  1. Physically mount generator and transfer switch.
  2. Mount generator.
  3. Ground generator with ground rod and ground strap using gravel.
  4. Bolt transfer switch to wall with hardware and bolt subpanel to wall.
  5. Pipe fuel to generator; run and connect fuel line to generator.
  6. Install black iron pipe and flexible fuel line.
  7. Wire transfer switch to main panel with copper wire, 3 conductor, conduit.
  8. Wire switch to subpanel and isolate emergency loads to subpanel with 40 amp (8.5RES) or 50 amp (12RES) circuit breaker.
  9. Wire power leads from generator to switch with copper wire, 3 conductor, conduit.
  10. Provide wiring for battery charger from a 120 volt outlet.
  11. Wire DC control wire from generator to switch using conductors and conduit.

Full service-parts list: Kohler 12RES →, Kohler 8.5RES →

Source: Kohler service 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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