In the final paper, the entire cable layout of the transformer station 110/20(10) kV Terminal (TTTS) is described, which is divided into 3 main parts, the northern and southern branches that exit directly from the TS 110/20(10) kV Terminal and connection to the transmission line 110 kV Zakučac – Meterize III. TS 35/10 kV Miljevac is the most threatened power supply point in the eastern part of the city of Split, since it is supplied radially via only one 35 kV cable from TS 220/110/35 kV Vrboran. In the event of a failure on the mentioned cable, the area of Strožanac, Korešnica, TTTS would remain without power. Precisely because of the reliability of the electricity supply, and the impossibility of increasing the power of the existing ones, as well as the connection of new consumers to the network, and based on the study of the Hrvoje Požar institute "Development of the electric power system of the wider area of Split", it is necessary to build a new TS 110/20(10) kV Terminal, and with it the associated 20 kV cable distribution.