Answer: The standard trench dimensions for direct buried underground cables vary based on local regulations, but a common practice is to excavate a trench deep enough to provide adequate cover (e.g., 600-900mm) and wide enough to allow for proper cable spacing and backfilling. Best practices include:

1. Cable Depth: Ensure the cable is buried at a sufficient depth to protect it from mechanical damage from digging, traffic, and ground settlement.

2. Backfilling: Use clean, stone-free soil or a layer of sand to surround the cable, followed by compacted backfill. This protects the cable from sharp objects and helps with heat dissipation.

3. Warning Tape: Install underground cable warning tape above the cable to alert future excavators of its presence.

4. Trench Support: For deeper trenches, proper shoring and sloping are necessary to prevent collapse and ensure worker safety.

Our range of underground cable laying equipment, including cable trenchers and cable rollers, is designed to facilitate these best practices safely and efficiently.