Lightning protection elements consist of a grounding system. The grounding system's main task is to disburse the current into the earth safely. This research aims to lower the resistance, thus creating a good path for the grounding system using natural enhancement material as backfill material. Since the kenaf core is brittle, not dense and loose, therefore clay as a bonding agent is mixed as a backfill material. Various mixtures of clay and kenaf are filled in the acrylic box. The sample goes through the high voltage AC and DC levels until the sample breakdown reaches. The upper limit of voltage depends on the material and its condition, either dry or wet. The data records the temperature and relative humidity of the laboratory before running the testing. After every increment, high voltage AC will be applied constantly for ten seconds at the backfill material. The testing also observes any physical changes in the material. From HVAC and HVDC tests, kenaf shows high conductivity. The breakdown voltage considers higher when the percentage of kenaf mix is low. The results show that kenaf has high conductivity and is suitable for use as a natural enhancement material for grounding purposes.
