The recommended trench dimensions and depths for 33kV cable installation are critical for safety, thermal management, and mechanical protection. While specific requirements can vary based on local standards and soil conditions, a common guideline is a minimum depth of approximately 1.05 meters (42 inches) for 33kV cables. The trench width and spacing are also crucial, especially when laying multiple circuits. A finely graded soft sand bedding is typically used to support the cables and facilitate heat dissipation. Protection tiles or warning tapes are installed above the cables to prevent damage from future excavations.

Our expertise in OHTL and underground cable laying equipment provides you with the right tools to meet these stringent trenching and installation specifications.