Kohler KSS, KSP KGS, KGP Automatic Transfer Switches Wiring Diagrams (tp6918)

These Kohler automatic transfer switches usually live in plant rooms, hospitals, data centers—anywhere you can’t afford the lights to go out when utility power drops. This wiring diagram set is what I’d keep on the bench to trace how line, load, and generator feeds move through the KSS, KSP, KGS, and KGP switchgear. When a unit won’t transfer back to utility after a storm, this is what I’d use to follow the control wires, check the sensing circuits, and verify each connector is pinned and routed the way Kohler intended.

Applications & Use Cases

• Trace wire routing from power lugs through control relays to confirm a new harness or retrofit is landed correctly.
• Isolate a transfer-failure fault by following coil and sensing circuits and then continuity-testing suspect runs.
• Verify connector logic after replacing a control board so each plug matches the original terminal assignments.
• Inspect field modifications and compare them to the OEM diagram before signing off on a repair.
• Plan clean cable routing when adding accessories, avoiding interference with existing control wiring.

FAQ

Q: Can I use this on a tablet while I’m at the switchboard?

A: Yes, it’s practical to zoom in on connector callouts and wire paths on a tablet or laptop right at the enclosure.

Q: Is it worth printing parts of this diagram?

A: Many techs print the relevant sheets, mark their test points and readings, then keep that with the service records.

Safety Note

Always de-energize and lock out all power sources before opening the enclosure or probing any wiring.

Kohler KSS, KSP KGS, KGP Automatic Transfer Switches Index:

Model Description
Part Number
Schematic Wiring Diagram
KSS
Standard Transition, Specific Breaker, 40–260A GM89713 GM89714
Standard Transition, Specific Breaker, 400–600A GM89715 GM89716
Standard Transition, Specific Breaker, 800–1000A GM89717 GM89718
KSP
Programmed Transition, Specific Breaker, 100–400A, 208–240V GM89719 GM89720
Programmed Transition, Specific Breaker, 100–400A, 380–480V GM89722 GM89721
Programmed Transition, Specific Breaker, 600A, 208–240V GM89719 GM89723
Programmed Transition, Specific Breaker, 600A, 380–480V GM89722 GM89724
KGS
Standard Transition, Bypass, 150–400A GM89695 (2 sheets) GM89696 (4 sheets)
Standard Transition, Bypass, 600–1200A GM89697 (2 sheets) GM89698 (4 sheets)
Standard Transition, Bypass, 1600–3000A GM89699 (2 sheets) GM89700 (4 sheets)
KGP
Programmed Transition, Bypass, 150–400A GM89701 (2 sheets) GM89702 (4 sheets)
Programmed Transition, Bypass, 600–1200A GM89705 (2 sheets) GM89706 (4 sheets)
Programmed Transition, Bypass, 1600–3000A GM89709 (2 sheets) GM89710 (4 sheets)

Kohler