
Types of Earthing Systems: TN, TT, and IT Explained
Power distribution systems deliver electricity from power plants to consumers using underground cables or overhead networks. Based on the number of wires, these systems are divided into single-phase two-wire, single-phase three-wire, three-phase three-wire, three-phase four-wire, etc. In this article, we intend to review types of earthing systems. Power distribution systems are classified according to how they are electrically connected to earth (earthing) as follows:





