Generator runs but frequently trips its own main breaker when large appliances start

Safety first: Turn OFF the generator and lock out the transfer switch before opening panels.

• Identify heavy loads: Note which appliances (e.g., well pump, air conditioner) cause trips when they start. Consider staggering their operation or disabling non‑essential loads.
• Inspect main breaker: Check the Scheppach main breaker for signs of overheating or mechanical wear. Replace if the handle feels loose or if there is visible damage.
• Tighten lugs: Tighten all output lugs and neutral/ground connections to the torque specified in the manual.
• Evaluate generator sizing: Compare the locked‑rotor amps (LRA) of large motors to the generator's surge rating. If consistently overloaded, upgrading the generator or using soft‑start devices on motors may be necessary.