Battery and PV with whole-home gateway single line diagram
Service-rated gateway ahead of the main panel. Use this for solar and a battery behind a service-rated gateway installed ahead of the main panel, so the whole home is backed up.
A free template with typical ratings, conductor callouts and general notes. Open it, change what differs on your job, fill in the title block and export a PDF.
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What the reviewer checks on this drawing
The reviewer checks that the gateway is now the service disconnect, with the main bonding jumper moved to it and the main panel neutrals isolated, along with the busbar arithmetic and the rapid shutdown initiation device.
What the drawing shows
Every device on the sheet, in the order power reaches it.
| Symbol | Label | Rating or detail | Conductors feeding it |
|---|---|---|---|
| Utility source | Utility service | 120/240V 1φ 3W | |
| Meter | Utility meter | 200A socket | Service conductors, per utility |
| Device | Backup gateway (GATEWAY) | 200A · service rated, main breaker inside | |
| Panel | Main panel | 225A bus · neutrals isolated | 3 #3/0 Cu + #6 G |
| Circuit breaker | Existing | All house loads | |
| Load | Existing loads | ||
| Circuit breaker | 60A 2P | ESS | |
| Inverter | Hybrid inverter and battery | 11.5 kW · 13.5 kWh | |
| PV array | PV array | DC-coupled · 12 kW DC | PV wire #10 Cu |
Notes on the sheet
- Gateway is the service disconnect. Main bonding jumper relocated to the gateway; main panel neutrals isolated.
- Busbar check: 225A bus × 120% = 270A ≥ 200A + 60A. Backfed breaker at the opposite end of the bus from the supply.
- Rapid shutdown initiation device located at the gateway and labelled.
Diagram is schematic and not to scale. Field-verify existing equipment ratings. Ratings and conductor sizes shown are typical. Confirm against the adopted code, the equipment listing and a load calculation before installation. Code references are to the 2023 NEC and the 2024 Canadian Electrical Code: see references and editions.
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