Generac — Reconnection Procedure
Installation · Stator leads and circuit breakers
From a Generac service manual covering: NP-50G, NP-50LP, NP-66G/LP, Q-40G, Q-55G/LP, Q-70G/LP. Check it applies to your exact model before use.
Applies to: Generac NP-50G, Generac NP-50LP, Generac Q-40G, Generac NP-50G/LP engine
Before you start
- Units reconnected for 120/240 volts dual voltage output will not be listed per RVIA.
- Not applicable to Q-40G model.
Procedure
- Remove generator cover and front panel.
- Disconnect stator leads 11 and 33, T1 (red) and T3 (black) from main circuit breakers CB1 and CB2.
- Set aside leads T1 (red) and T3 (black) for later use.
- Disconnect stator leads 11 and 33 from 4-tab terminal connector (TC).
- Disconnect stator leads 22 and 44 from grounding terminal (GT).
- Disconnect one of the two T2 (white) leads from grounding terminal.
- Remove existing circuit breakers CB1 and CB2; install new appropriately rated circuit breaker.
- Connect stator leads 11 and 44 to new circuit breaker; attach leads T1 (red) and T3 (black).
- Connect stator leads 22 and 33 to grounding terminal (GT).
- Be sure a neutral lead is installed and routed from grounding terminal for connection loads.
- Route leads T1 (red), T3 (black), and grounded neutral lead through conduit clamp and out of panel.
- Reassemble panel and generator cover.
Full service-parts list: Generac NP-50G →, Generac NP-50LP →, Generac Q-40G →
Source: Generac 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.