53 rules the installation of two or more grounding electrodes described in Section 250. This section also adds requirements, conditions, and restrictions to such installations. OSHA's grounding requirements are spelled out primarily in two sets of regulations: 29 CFR 1910 Subpart S for general industry workplaces, and 29 CFR 1926 Subpart K for. study of this important article. Article 250 covers the grounding requirements for providing a path to the earth to reduce overvoltage from lightning, and the bonding requirements for a low-impedance fault current path back to the source of the electrical supply to facilitate the opera-tion of. Updated to current 2017 NEC, and included design manual requirement to include equipment grounding conductors in all feeder and branch circuits operating under 600 volts, and other editorial and typographic revisions. This chapter describes general grounding installation requirements for. If you're working with electrical systems, you know that grounding isn't just some bureaucratic requirement—it's literally the difference between a safe, functional system and a potential disaster. Rod, pipe, and plate grounding. Power from factory ground must be installed by a qualified electrician. Each DISTRIBUTION BOX and controller must be grounded.