Section 24.1-06-02-50 - (NEC 250) Grounding and bondingGrounding and bonding must conform to article 250, 2023 edition, National Electrical Code (first version, printed in 2022).
1. At motor connections, a bonding jumper sized in accordance with table 250.122, 2023 edition, National Electrical Code (first version, printed in 2022), must be provided around all flexible conduit. The bonding jumper is not required if a separate grounding conductor is included.2. Grounding of metal outdoor lighting standards.a. Definition of lighting standard is a pole exceeding twelve feet [3.66 meters] in height measured from the bottom of the base or from the intended grade level of poles.b. The metal lighting standard must be connected to a one-half inch [12.70-millimeter] by ten-foot [3.05-meter] copperweld ground rod, or twenty feet [6.10 meters] of one or more bare or zinc galvanized or other electrically conductive coated steel reinforcing bars or rods (rebar) of not less than one-half inch [1.27 centimeters] in diameter, by the means of a bonding jumper. The ten-foot [3.05-meter] ground rod must be driven in the center of the metal standard base and project slightly above the base. Both ground rod and equipment grounding conductor must be connected to the metal standards. The bonding jumper must be in accordance with 2023 edition, National Electrical Code (first version, printed in 2022), and in no case smaller than no. 8 copper or no. 6 aluminum.3. The grounding electrode conductor must be connected to the grounded service conductor in the enclosure for the service disconnect.4. Exception: If multiconductor cables are paralleled in the same raceway, auxiliary gutter, cable tray, or trench, a single equipment grounding conductor that is sized in accordance with 250.122(f)(2)(c) may be permitted in combination with the equipment grounding conductors provided within the multiconductor cables and all must be connected together.N.D. Admin Code 24.1-06-02-50
Adopted by Administrative Rules Supplement 2017-364, April 2017, effective 4/1/2017.Amended by Administrative Rules Supplement 2024-393, July 2024, effective 7/1/2024.General Authority: NDCC 43-09-05
Law Implemented: NDCC 43-09-21, 43-09-22