There are several advantages to having an electrical installation in a building or home. Some of the most significant benefits include:

1. Improved safety: Electrical installations help to ensure that electrical systems are safe to use and reduce the risk of electrical fires and other hazards.
2. Increased convenience: Electrical installations provide a reliable source of electricity for powering appliances, lighting, and other devices, which can be convenient and make daily tasks easier.
3. Enhanced comfort: Electrical installations can be used to power heating and cooling systems, as well as other devices that contribute to a comfortable living environment.
4. Improved property value: A well-maintained electrical installation can be seen as a desirable feature by potential buyers and can increase the value of a property.
5. Increased energy efficiency: Modern electrical installations can include energy-efficient features, such as LED lighting and smart thermostats, which can help to reduce energy consumption and lower energy costs.

Overall, an electrical installation is a vital component of any building or home and can provide a number of benefits in terms of safety, convenience, comfort, and energy efficiency.