26 mm 2 (10 AWG) ground wire must be used, and in all other markets a 6 mm 2 must be used. On the US market, a 5. Each DISTRIBUTION BOX and controller must be grounded. Grounding of the units: Attach a ground wire from one of. This paper is intended to give an overview of the vari-ous relationships between neutral currents, ground currents, electrode impedances and voltage potentials that are en-countered in the grounding of multigrounded wye distribu-tion systems. This system configuration is the most com-monly used. IPMENT, STRUCTURES, ETC. IN ELECTRICAL STATIONS INCLUDING TRANSMISSION AND DISTRIBUTION SUBSTAT GR THAN 8 FT FROM THE FENCE. THE FENCE SHALL BE GROUNDED SEPARATELY FROM THE GRID UNLESS OTHERWISE NOTED ON THE A PROPRIATE PROJECT DRAWING. SEE APPLICATION. It is recommended for AP outdoor installation to protect the AP as well as the indoor equipment electrical surges. Surges that can reach the internal equipment from the outside, or least common, surges that may originate from inside that may reach the AP. Bonding is the connecting together of metal parts of chassis, assemblies, frames, shields, and enclosures to reduce the effects of emi and ground noise. Whether you're a seasoned pro or just starting out, this comprehensive guide will give you practical.