Attach a ground wire from one of the threaded studs (A) at the bottom of the housing, to the mounting plate (B). The ground resistance between all system parts shall be <. Whether you're a seasoned pro or just starting out, this comprehensive guide will give you practical insights into proper grounding techniques, with a special focus on how selecting quality materials from a reliable building material supplier impacts your entire system's safety and longevity. Bonding is the connecting together of metal parts of chassis, assemblies, frames, shields, and enclosures to reduce the effects of emi and ground noise. You can mount the chassis with either. 1. 7 Provide conduit grounding bushings, bonded together and connected to the equipment enclosure on all incoming and outgoing conduits on distribution switchgear and switchboards, distribution panels and on all conduits over 1-1/4” diameter at all panelboards, pull boxes and equipment. 8 Provide. r surge can be catastrophic for a company. Proper protection can save thousands of dollars in damage, operationa surge can be catastro al equipment may be da g a purpose-designed air terminal rgy into a low impedance grounding d loops and create an equipotential p System 2000 and nVent ERICO. Rod-type grounding electrodes should be spaced a minimum of 6 feet (1. Supplemental grounding electrodes, such as rods, pipes, or plates, must meet the 25-ohm requirement specified in NEC Section 250. An additional ground. 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.