The installation of grounding methods for transmission lines is absolutely necessary in order to guarantee the safety, dependability, and effectiveness of power distribution systems. Proper grounding of the system can protect against lightning strikes, electrical failures, and. Safety of Personnel: By safely channeling fault currents into the ground, proper grounding helps to reduce the risk of electric shock to personnel. This helps to reduce the potential difference that exists between conductive parts and the earth. Each DISTRIBUTION BOX and controller must be grounded. 26 mm 2 (10 AWG) ground wire must be used, and in all other markets a 6 mm 2 must be used. Whether you're a seasoned pro or just starting out, this comprehensive guide will give you practical. Because parts of the power system, such as equipment frames, are grounded, and the rest of the environment essentially is at ground potential also, this has big implications for the system.