The aim of this work is to get acquainted with problems connected with a designing of power and data distribution, a definition of principles necessary for a drawing design and a project realization of an electrical installation for a detached house. The first part of the thesis deals with the definitions and principles related to safety and security administration, which must be respected at designing the project documentation. In the following part of this thesis there are presented the conditions and selected methods of connecting the object to the low voltage distribution network, methods of conducting heavy and low current rake and the lighting design. The second part deals with the designing of a specific electrical installation proje...