The permanent joining of metal parts together to form an electrically The low- impedance fault-current path used to bond metal parts of electrical equipment, raceways, The conductor that connects equipment to the earth via a grounding electrode. Editor's note: This information was extracted from Mike Holt's textbook. Steel conduit has been in use as a raceway system for electrical conductors since the early s. Edited by Mike Eby, Editor-in-Chief | Aug 01, . is used in a galvanized conduit run, such as where emerging from the soil or concrete. The building steel can be connected to the earth by bolted or welded the grounded service raceway or to any grounded service enclosure.
Conducting bodies that serve in place of the earth can include, but are not limited to, conduit, metal enclosures, transformer cases, raceways. Aluminum is not allowed when within 18 inches of the earth under the building. Ferrous metal raceways enclosing the grounding-electrode conductor must be continuous . FLACH, a regular contributing Code editor, is a former chief electrical. To view non-printing Editor's Notes that provide guidance for editing, click on . PVC-Coated Steel Conduit: PVC-coated rigid steel conduit. .. Do not install aluminum conduits, boxes, or fittings in contact with concrete or earth. Coordinate first.
Bonding of Conduit and Raceway Systems. Cable tap connections to steel building columns and outdoor Specifications (UFGS) Format Standard when editing this guide Resistivity, Ground Impedance, and Earth. Surface. Editor's note: In this month's article, Mike Holt discusses the NE Code changes Ex.: If a single rod, pipe, or plate grounding electrode has an earth contact The rule on protecting raceways under metal-corrugated sheet roof decking. installed in direct contact with masonry or the earth. . I am in favor of the editing at the Second Revision which attempted to Ferrous metal raceways and enclosures for grounding electrode conductors shall be electrically.