The Transmission line and Distribution line both are used to carry power or electricity from one place to the other. Transmission Line helps in the movement of electricity from power plant to the substations, It is carried out electricity in three phase supply system. The distribution line carries electricity from the substation to the consumer’s end, It is carried out electricity in three or single phase supply systems. When it comes to voltage levels, transmission lines are a high voltage line from up 69kV to 138 kV in Jamaica. Distribution lines are low voltage lines that carry electricity from the substations to the end users for residential and commercial use from 120 V to 24 kV in Jamaica.