| Serial Range | Mode | Details | 
| > BBE20001560 | 4‑Wire WYE | Terminate L1, L2, L3 and N on their respective terminals. Remove any N–A bond. | 
| ≤ BBE20001560 | Delta (N bonded to A) | Keep internal N–A bonding strap. Terminate only L1/A, L2/B, L3/C. | 
📋 Verification Steps
After wiring each unit, always:
- Measure phase‑to‑phase voltages (L1–L2, L2–L3, L3–L1) 
- Measure phase‑to‑neutral voltages on 4‑wire WYE units (L1–N, L2–N, L3–N) 
- Confirm no unexpected faults or trips on the EDG. 
📝 Notes & Best Practices
- Follow local electrical codes and LOTO procedures. 
- If in doubt about your unit’s serial, contact Verdigris Support with serial + firmware version. 
📜 Revision History
| Date | Version | Changes | Author | 
| 2025‑05‑05 | 1.0 | Initial WYE vs. Delta wiring rules | Josh Avalos | 
