Introduction
Off-grid solar systems are not connected to the municipal grid , but legal compliance and safety standards still apply to protect property, users, and installers. Non-compliance can void warranties, invalidate insurance, and lead to fines or forced removal.
Ensure electrical work complies with SANS standards, use certified components, and maintain proper safety protocols.
Mandatory Standards
SANS 10142-1: Wiring of premises (off-grid included)SANS 60335-2-29: Battery chargersSANS 62109: PV inverter safetySANS 10400: Building regulations (structural)
Component Certification
Inverters: NRCS LoA (Letter of Authority)
Batteries: UN38.3 transport safety
Panels: IEC 61215 / 61730
Cables: SANS 1507 (solar-rated)
Warning:
Using non-certified components voids insurance and may result in criminal liability in case of fire or injury.
Permits & Approvals
While grid connection permits are not required, local municipal building permits may apply for roof or ground-mounted installations.
Roof-Mounted
Structural engineer report (if >20 panels)
Municipal plan approval (minor works)
Heritage approval (if in conservation area)
Ground-Mounted
Building plan submission
Zoning compliance (rural/residential)
Environmental impact (if >1 ha)
No Permit Needed
Portable systems (<5 kW)
Interior battery banks
Temporary installations
Inspection and Documentation
Keep installation records, compliance certificates, and manufacturer instructions for safety, insurance, and resale .
Certificate of Compliance (CoC): Issued by registered electrician (mandatory for insurance)As-Built Drawings: Panel layout, wiring, earthingComponent Certificates: NRCS, IEC, UN38.3Maintenance Log: Annual inspections, battery testsInsurance Declaration: Submit CoC + system specs to insurer
Pro Tip:
Store all docs in a fireproof safe and upload to cloud (Google Drive) .
Fire Safety & Risk Mitigation
Off-grid systems with lithium batteries pose fire risks if not installed correctly.
Battery Room Requirements
Ventilation: 0.3 m³/h per kWh
Fire-rated enclosure (90 min)
Smoke + heat detectors
ABC fire extinguisher nearby
Grounding & Surge
Earth rod + equipotential bonding
DC surge arrestors (Type 2)
Lightning protection (if >10m height)
Insurance & Liability
Most insurers require proof of compliance for off-grid solar.
Notify Insurer: Declare system value and CoCPremium Impact: +0.5–2% (compliance reduces risk)Claim Denial Risk: 100% if no CoC or non-certified gearSAPVIA Installers: Preferred by Santam, OUTsurance
Conclusion
Even off-grid systems require legal and safety considerations to ensure long-term safe operation and insurance compliance. Always use SANS-compliant components, registered installers, and maintain full documentation — it’s not optional, it’s protection.
