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All non—current-carrying metal parts of electrical equipment and all metal raceways and cable sheaths shall be solidly grounded and bonded to all metal pipes and rails at the portal and at intervals not exceeding 300 m (1000 ft) throughout the tunnel.

Related Code Sections

(A) General, Grounded and Bonded
All non-current-carrying metal parts of electrical equipment and all metal raceways and cable sheaths shall be solidly grounded and bonded to all ...
(A) General, Grounded and Bonded
All non—current-carrying metal parts of electrical equipment and all metal raceways and cable sheaths shall be solidly grounded and bonded to all ...
Article 250 Wiring and Protection, Grounding and Bonding
This article covers general requirements for grounding and bonding of electrical installations, and the specific requirements in (1) through (6 ...
Article 250 Wiring and Protection, Grounding and Bonding
This article covers general requirements for grounding and bonding of electrical installations, and the specific requirements in (1) through (6 ...
324.60 Wiring Methods and Materials, Grounding and Bonding
All metal shields, boxes, receptacle housings, and self-contained devices shall be electrically continuous to the equipment grounding conductor ...