- Location
- New Jersey
- Occupation
- Journeyman Electrician
Been having a discussion with the field engineer about using short pieces of EMT (about 30") to protect a common grounding electrode conductor riser as it runs up through the floors in a high rise building. He's of the opinion that no bonding at both ends is required because the short section of raceway is merely a sleeve and is not a raceway as outlined in 250.64(E). That code section does mention raceways but says nothing about sleeves and calling a sleeve an enclosure seems to be a stretch to me.
250.64 Grounding Electrode Conductor Installation.
(E) Enclosures for Grounding Electrode Conductors. Ferrous metal enclosures for grounding electrode conductors shall be electrically continuous from the point of attachment to cabinets or equipment to the grounding electrode and shall be securely fastened to the ground clamp or fitting. Nonferrous metal enclosures shall not be required to be electrically continuous. Ferrous metal enclosures that are not physically continuous from cabinets or equipment to the grounding electrode shall be made electrically continuous by bonding each end of the raceway or enclosure to the grounding electrode conductor. Bonding shall apply at each end and to all intervening ferrous raceways, boxes, and enclosures between the cabinets or equipment and the grounding electrode. The bonding jumper for a grounding electrode conductor raceway or cable armor shall be the same size as, or larger than, the enclosed grounding electrode conductor. Where a raceway is used as protection for a grounding electrode conductor, the installation shall comply with the requirements of the appropriate raceway article.