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Expected design outputs
Agree the deliverables in your contract. The following is a homeowner's checklist, not a claim that every document is a universal permit requirement. The engineer, utility and LGU determine the final submission package.
| Output | What it should help you understand |
|---|---|
| Roof / panel layout | Panel locations and count, orientations, mounting, setbacks and maintenance access. |
| Single-line electrical diagram | How PV, inverters, breakers, meters, batteries and the grid connect. |
| Electrical plans / load schedule | Circuit capacities, cable routes, protection and service-entrance changes. |
| Structural assessment where needed | Roof condition, loading, fixings and weather exposure. |
| Energy and financial estimate | Yield source, shade/loss assumptions, self-use, exports, tariffs and exclusions. |
| Equipment schedule | Exact models, quantities, ratings, certifications and warranty documents. |
What is the shutdown equipment near the service entrance?
Your design may locate an accessible, labeled PV shutdown initiator or disconnect near the service entrance/main disconnect. Its purpose and placement must follow the approved design and applicable local requirements; a US rule is not automatically a Philippine requirement.
A rapid-shutdown system reduces voltage on specified PV conductors when initiated. A main breaker or a solar AC isolator is not automatically a complete rapid-shutdown system. Panels can still generate DC in daylight, and batteries retain energy. Shutting down does not make every part safe to touch.
Testing and handover outputs
A render of panels on a roof is useful for discussion, but it is not a substitute for engineering drawings or commissioning records.
- Final as-built drawings showing what was actually installed, including shutdown locations and backed-up circuits.
- Commissioning and protection-test records, plus utility approvals where applicable.
- Equipment serial numbers, product and workmanship warranties, and local claim contacts.
- Owner access to monitoring, correct meter/sensor readings and an initial performance baseline.
- A written shutdown/emergency guide and a maintenance schedule.
- For backup: demonstrated transfer/isolation and the agreed essential-load limits.
Sources and further reading
Official and manufacturer references checked 21 September 2026. Requirements and product terms can change.