Direct answer
A PV combiner box wiring layout should show string inputs, polarity, fuse positions, SPD, isolator or breaker, output terminals, cable gland direction and labels.
This is a procurement guide, not an installation manual. Final wiring must follow project drawings and local electrical rules.
Core procurement parameters
| Wiring scope | Inputs, protection devices, output and labels |
|---|---|
| Inspection record | Internal photos before shipment |
| Common mistake | Undersized enclosure or unclear polarity labels |
| Best use | RFQ review before custom assembly |
Applications
- Custom combiner RFQs
- Factory pre-wired boxes
- QC inspection
- Installer handover preparation
Available options
- Input/output diagram
- Circuit labels
- Photo checklist
- Packing by project zone
QC points before shipment
Check polarity labels
Verify torque and cable route
Inspect SPD/fuse wiring
Compare actual layout with approved diagram
FAQ
Should the supplier provide wiring photos?
Yes. Internal photos help confirm device layout, polarity labels and wiring quality before shipment.
Can OmniSol review a combiner box diagram?
Yes. We can use the diagram to quote a cleaner assembled box and avoid guessing device placement.