Solar Farm Cable Trenching Safety
Energy & Renewables › Solar › Solar Farm Cable Trenching Safety
Solar Farm Cable Trenching Safety
Cable trenching on solar farm sites involves excavating hundreds of metres of shallow trenches to connect panels to inverters and substations. The work is repetitive and often takes place across open agricultural land with variable ground conditions. Existing underground services, live DC cables from installed panels, and plant movements all present significant risks. This talk covers the hazards and controls specific to solar farm cable trenching operations.
- Complete a permit to dig and carry out cable detection surveys before excavating any cable trench.
- Ensure all existing underground services are marked out and visible before machine excavation begins.
- Treat all DC cables from installed solar panels as live during daylight hours unless formally isolated.
- Support trench sides where ground conditions are unstable using shoring or battered profiles as required.
- Maintain pedestrian exclusion zones along both sides of the active excavation face during machine work.
- Brief operatives on the cable trench route plan, connection sequence, and any known buried services.
- Use insulated tools and gloves rated to the DC voltage when handling or laying live-side cabling.
- Ensure safe crossing points are provided where trenches intersect pedestrian or vehicle routes on site.
- Backfill and reinstate completed trench sections promptly to reduce open excavation hazards.
If someone receives an electric shock from a DC cable, isolate the supply if safe to do so. Call 999 immediately. Do not touch the casualty until the circuit is confirmed as de-energised. Begin CPR if the person is unresponsive.
- A permit to dig and cable detection survey are required before any trench excavation begins
- DC cables from installed solar panels are live during daylight and must be treated as energised
- Trench sides must be supported or battered in unstable ground to prevent collapse
- Pedestrian exclusion zones must be maintained along both sides of the active excavation
- Insulated tools and voltage-rated gloves are required when handling live-side DC cables
RAMS Builder
Generate professional Risk Assessment and Method Statements in minutes. 10 document formats, site-specific content, instant Word download.