28/07/2026
Earthing isn't just a green and yellow cable, it's one of the most critical safety systems on any solar PV installation.⚡️
However, during our Operations & Maintenance inspections, we regularly identify loose earth connections, corroded conductors, damaged earth cables, missing earth bonds, and components that are no longer effectively earthed.
These issues can develop over time due to environmental exposure, corrosion, vibration, maintenance activities, accidental damage, or system modifications.
Why does this matter?
An effective earthing and bonding system provides a low-impedance path for fault current. This helps protective devices operate as intended and reduces the risk of dangerous touch voltages during electrical fault conditions.
If the earthing system is compromised, the consequences can include:
⚠️ Fault currents may not clear promptly or as designed
⚠️ Metal frames and equipment may become energised during fault conditions, increasing the risk of electric shock
⚠️ Protective devices may not operate as intended
⚠️ Equipment may be more susceptible to damage during fault conditions or lightning related events
⚠️ Increased downtime, costly repairs, and reduced system reliability.
The concerning part? Many earthing defects aren't obvious during a routine visual inspection and are often only identified through proper testing. A system can continue generating power while hidden safety defects remain.
That's why Operations & Maintenance is about far more than monitoring system performance. It includes inspecting and testing the earthing and bonding system to verify that it continues to perform as intended throughout the life of the installation.
At DWS Solutions, we believe preventative maintenance is about identifying potential risks before they become failures, protecting both your assets and the people who work around them.
🔎 When was the last time your solar PV system's earthing and bonding were inspected and tested?
Because a reliable solar PV system starts with a safe one.
www.dwssolutions.co.za