Kohler — Source and Load Connections
Installation · Power cables and lugs
From a Kohler service manual — check it applies to your exact model before use.
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Before you start
- Do not use compressed air to clean the switch because it can cause debris to lodge in the components and cause damage.
- Making line or auxiliary connections. Hazardous voltage can cause severe injury or death. Deenergize the normal power source before making any line or auxiliary connections.
Procedure
- Determine the cable size and number using the cable size table; ensure lugs suit the cables.
- Drill entry holes for conductors at locations shown on enclosure drawings; remove debris.
- Install and test power cables; leave slack to reach all power connecting lugs.
- Test the power conductors before connecting them to the transfer switch.
- Clean cables with a wire brush to remove surface oxides.
- Apply joint compound to the connections of any aluminum conductors.
- Connect cables following phase markings (A, B, C, N); for single-phase connect to A and C.
- Tighten all cable lug connections to the torque values shown on the label on the switch.
- Wipe off any excess joint compound after tightening the terminal lugs.
Tools required
- Wire brush Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
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.