Important safety information: Rooftop solar creates electrical hazards. This page explains safety concepts only; it is not a do-it-yourself installation guide. Do not work on live PV circuits, rooftops, electrical panels or batteries unless you are trained and authorised.

1. Qualified installation and approvals

Ask a suitably qualified solar installer/electrician to assess the existing electrical system and to design, install, test and commission the new system in accordance with applicable regulations and manufacturer instructions. Roof strength, waterproofing, access and structural suitability need assessment before work begins.

2. Solar panels can stay electrically live in daylight

PV modules produce DC electricity when exposed to sunlight. Disconnecting the house's grid supply does not necessarily remove DC voltage from solar conductors. Do not touch damaged connectors or exposed conductors. Seek qualified assistance if you suspect a fault.

3. Earthing, isolation and protective devices

Correct earthing/bonding, appropriately rated breakers and isolators, cable selection, surge protection and clear labelling depend on site design and applicable requirements. Ask the installer to document installed protection and commissioning checks.

4. Grid outages and anti-islanding

Ordinary grid-tied inverters are expected to stop feeding the grid when supply is lost. Customers should not assume their on-grid system will provide backup during a power cut. Backup supply requires an appropriately engineered solution.

5. Batteries and inverter location

Battery systems need compatible charging and protection, correct enclosure placement, ventilation where applicable, environmental protection and fire-safety arrangements appropriate to the battery technology. Never modify wiring or settings without professional advice.

6. Cleaning and rooftop access

Roof access can be hazardous. Never clean modules during lightning or while standing on unsafe roof edges. Follow the panel manufacturer's cleaning instructions; do not use abrasive substances or pressure/water methods that may damage modules or wiring. Arrange professional cleaning where safe access is uncertain.

7. During a fault or emergency

Keep people away from damaged equipment and exposed wiring. Do not attempt repairs yourself. If there is smoke, fire, shock or a serious hazard, contact emergency services and a qualified electrical professional. Only operate a clearly identified emergency isolation procedure that you have been trained to use.