DIVISION 1 - GENERAL REQUIREMENTS - IDEAS-EC

3 .2 GROUND RINGA. Install conductor at a minimum depth of 2-1/2 feet completely around transformer and connect toform a complete circle. Total length shall not be less than 20 feet.3 .3 MADE ELECTRODESA. For service grounding, provide two rods spaced minimum of 6 feet apart. Embed rods verticallyinto permanent moisture level or in accordance with NEC 250-53(B).3 .4 SERVICE GROUNDING AND BONDINGA. Service grounding and bonding exists at Panel MP. Only equipment grounding applies to thisinstallation.3 .5 EQUIPMENT GROUNDS AND BONDSA. Ground metallic raceway systems, enclosures and non-current-carrying metallic parts of electricalequipment. Enclosures and non-current-carrying metal parts are not considered grounded bycontact with grounded metallic raceway system. Install a separate ground wire in all feeder andbranch circuit raceway systems, both metallic and nonmetallic, to serve as the equipmentgrounding conductor. Ensure electrical continuity of raceway systems. Remove non-conductingcoatings where raceways connect to enclosures. Make raceway connections at enclosures tight toensure continuity. Supplement with jumpers, as needed. Provide bonding jumpers acrossexpansion joints and telescoping sections of metallic raceway. Establish continuity between outletboxes and receptacles using a bonding jumper except where surface mounted boxes or approvedground yokes are used. Do not use red lead, Teflon tape, or other non-conducting material atmetallic conduit joints before assembly.3 .6 GROUNDING ELECTRODE SYSTEMA. Grounding electrodes, including ground rings, metal underground water pipe and concreteencasedelectrodes, shall be bonded together to form the grounding electrode system at eachbuilding or structure served.3 .7 SEPARATELY DERIVED SYSTEMSA. Ground separately derived systems, such as dry-type transformers, or auxiliary power units (APU)in accordance with NEC 250-30.3 .8 OTHER GROUNDING SYSTEMSA. If other grounding systems, such as for a lightning protection system, are present at or within 50feet of the building or structure served, bond the systems together with bare copper ground wire,sized to the larger of the two grounding electrode conductor sizes.3 .9 COMMON SERVICEA. When one service entrance serves more than one structure, provide a separate grounding electrodesystem for each structure in accordance with NEC 250-32. Connect grounding electrode systemto the electrical system neutral at each structure.END OF SECTION16060-205/08 GROUNDING