Minimum distance of underground cable from the foundation of building should be 10 cm

Reasoning:
When installing underground cables near buildings, it is important to consider the safety and integrity of both the cable and the building. The minimum distance between the underground cable and the foundation of a building is determined by several factors, including the type of cable, the voltage it carries, and the depth at which it is buried.

Factors determining the minimum distance:
1. Type of cable: Different types of cables have different insulation materials and thicknesses, which affect their heat dissipation and resistance to external factors. The type of cable used will determine the minimum distance required to prevent any damage to the building's foundation.

2. Voltage level: Higher voltage cables require greater distances from the building to reduce the risk of electrical breakdown or arcing. This is especially important for cables carrying high voltages, as they can create significant electromagnetic fields that may impact the foundation or other structures.

3. Burial depth: The depth at which the cable is buried also affects the minimum distance. Deeper cables may require a greater distance from the building to prevent any potential damage to the foundation.

Safety considerations:
The minimum distance requirement serves several safety purposes:

1. Heat dissipation: Underground cables generate heat during operation due to the current flowing through them. By maintaining a minimum distance from the building's foundation, the heat dissipation is improved, preventing any potential damage to the building materials.

2. Electromagnetic interference: High voltage cables can generate electromagnetic fields that may interfere with the operation of electronic devices or sensitive equipment within the building. By maintaining a minimum distance, the impact of the electromagnetic interference can be minimized.

3. Protection against accidental damage: By maintaining a minimum distance, the cable is protected from accidental damage during construction or excavation activities near the building's foundation.

4. Maintenance and accessibility: A minimum distance from the foundation allows for easier access to the cable for maintenance and repair purposes, reducing the risk of damage to the building during such activities.

Conclusion:
In conclusion, the minimum distance between an underground cable and the foundation of a building should be 10 cm. This distance ensures the safety and integrity of both the cable and the building, considering factors such as the type of cable, voltage level, burial depth, and various safety considerations. It is important to follow these guidelines to prevent any potential damage to the building and ensure the reliable operation of the underground cable system.