Generator stops with E12 and cannot be restarted until cleared

Safety first: Open the main output breaker and isolate the generator from all loads. Verify that utility power is properly isolated via the ATS before working on wiring.

• Reset breaker: After a brief cooling period, reset the generator output breaker. If it trips immediately with no load connected, the breaker or internal wiring may be faulty.
• Check load size: Review the total connected load (kW) versus the Pramac generator rating. Large motor loads or electric heaters may exceed capacity. Reduce or stagger loads.
• Inspect downstream circuits: Have a qualified electrician inspect building wiring and ATS for shorts or miswiring that could cause overcurrent.
• Replace breaker if needed: If the breaker is mechanically weak or overheats at normal current, replace it with the exact type and rating specified by Pramac.