The importance of earthing The earthing takes care of the fact that, when an animal touches the fence, the circuit is being closed and the current is flowing through the animal. This causes an electrical shock to deter the animal. For an optimal working of the electric fence good earthing is essential. The earthing has to be as such that a very low resistance is present (not higher than 100 Ohm). Optimal is a copper or copper coated earth pin with a diameter of about 20 mm, which is connected to the groundwater level. This however cannot always be realized. In order to get good earthing, we recommend the connection of at least 2 earth pins with a length of 1 meter (code 162-80199) parallel and/or in series with each other, with an interval of 3 meters. When you want to have the maximum use of your electric fencer, then earthing is of crucial importance.Without earthing the system can never work properly. Click here for testing information.