<![CDATA[T he grounding system is an important component in electrical installations that ensures human safety, protects electrical equipment, and maintains the reliability of the electrical power distribution system. The condition of the grounding system in the Electrical Engineering Building of Fakfak State Polytechnic is still not optimal because the grounding resistance value obtained is relatively high. The grounding resistance value that exceeds the standard can reduce the effectiveness of the grounding system, thereby increasing the risk of interference, equipment damage, and danger of electric shock. This study aimed to analyze the existing condition of the grounding system and evaluate improvement efforts to improve the safety and reliability of electrical installations in the building. The research method used was a quantitative method with an experimental approach through measuring the grounding resistance before and after the improvement. Measurements were carried out using the three-point method with an Earth Tester measuring instrument to obtain accurate soil resistance values. Improvement efforts were made by adding two copper electrodes and utilizing additives in the form of a mixture of bentonite, salt, and charcoal around the electrodes to increase soil conductivity. The initial measurement results showed a grounding resistance value of 10.67 Ω, which still exceeded the maximum limit based on PUIL 2011, which is ≤ 5 Ω for general installations. After the repairs, the grounding resistance value decreased to 6.96 Ω, a decrease of approximately 34.8% from the initial condition. Although these results do not fully meet the 2011 PUIL standards, this study proves that the addition of electrodes and the use of additives can significantly increase the effectiveness of the grounding system. The results of this study are expected to serve as a reference in efforts to improve the quality of grounding systems in educational buildings and similar electrical installations.]]>
