There are various ways to lay power cables, and different schemes are suitable for different site conditions. Choosing the appropriate laying form can not only protect the cable body, but also facilitate later maintenance and repair.

Direct burial is a common method of burying cables in underground soil layers, with relatively controllable construction costs. It is often used for suburban roads and peripheral lines in parks. Directly buried cables require the installation of armor, laying of fine sand and protective covers to prevent damage to the cables during later ground construction. The disadvantage is that the difficulty of troubleshooting is relatively high, and the workload of excavation and maintenance is relatively high.

Cable tray laying is commonly used in factories, indoor buildings, and cable interlayers. The cables are neatly arranged inside the cable tray for easy observation of appearance, convenient maintenance, and good heat dissipation conditions. The cables inside the cable tray need to be placed in layers to control the filling rate and prevent poor heat dissipation caused by dense cables.

The laying of cable trenches and tunnels is suitable for urban backbone power grids, with multiple high-voltage cables arranged in a centralized manner and reserved pedestrian pathways for operation and maintenance personnel to enter for internal inspections. But this type of project requires higher initial investment and requires proper drainage and ventilation to prevent water accumulation in the trench from corroding the cable sheath.

Each laying method has its own advantages and disadvantages, which need to be determined comprehensively based on the site space, number of lines, and later operation and maintenance needs. Construction should be standardized to reduce external damage and ensure long-term stable operation of cables.