Abstract

• have an effect on the earth resistance (resistivity). The earth resistance tester (Model 2720 ER) which containing three electrodes were used to measure the earth resistance. The earth resistance data were collected for different temperatures (actually different times). The electrodes were driven down to the same depth and equal distances apart in a straight line. According to the data, it was found that the earth resistance depends on temperature and seasonal variation. From the results, the values of earth resistance were less than 5. According to the IEEE standard, this area is suitable for telecommunication facilities and distribution substation.