Underground power installation and connections refer to the process of installing electrical cables and connections underground instead of overhead. This method is often preferred in urban areas where overhead power lines can be unsightly and hazardous, or in areas prone to extreme weather conditions.

The process of underground power installation and connections typically involves the following steps:

1. Planning and design: This involves identifying the route for the underground cables and determining the electrical load requirements for the area.
2. Excavation: A trench is dug along the planned route for the cables to be installed.
3. Installation of conduits: Conduits are pipes made of PVC or other materials that protect the electrical cables and allow for future maintenance and repairs.
4. Pulling cables: The electrical cables are then pulled through the conduits and connected to the main power source.
5. Termination and connection: The cables are terminated and connected to the power source using specialized connectors and equipment.
6. Testing and commissioning: The system is tested and commissioned to ensure that it is operating correctly and safely.

It is important to note that underground power installation and connections can be more expensive and time-consuming than overhead installation methods, but it offers advantages such as improved safety, reduced visual impact, and reduced risk of power outages due to extreme weather conditions.