Which NEC article handles grounding and bonding?

Which NEC article handles grounding and bonding?

• A. Article 310.
• B. Article 350.
• C. Article 700.
• D. Article 250.

Answer: (D)

Grounding and bonding in electrical systems are about giving fault currents a low-impedance path to the earth and ensuring metallic parts are at the same electrical potential to prevent shock hazards. The NEC assigns all grounding and bonding requirements to Article 250, which spells out how to establish the grounding electrode system (ground rods and other electrodes), how equipment grounding conductors connect back to that system, and how to bond various conductive parts (like water piping, structural steel, enclosures, and other metal components) so there isn’t dangerous voltage differences. It also clarifies how service grounding relates to bonding at different points in a installation and provides the rules for making these connections safely. The other articles mentioned cover different topics—conductors with ampacity rules, a type of nonmetallic conduit, and emergency systems—not the comprehensive rules for grounding and bonding. So Article 250 is the authoritative reference for grounding and bonding.

Grounding and bonding in electrical systems are about giving fault currents a low-impedance path to the earth and ensuring metallic parts are at the same electrical potential to prevent shock hazards. The NEC assigns all grounding and bonding requirements to Article 250, which spells out how to establish the grounding electrode system (ground rods and other electrodes), how equipment grounding conductors connect back to that system, and how to bond various conductive parts (like water piping, structural steel, enclosures, and other metal components) so there isn’t dangerous voltage differences. It also clarifies how service grounding relates to bonding at different points in a installation and provides the rules for making these connections safely. The other articles mentioned cover different topics—conductors with ampacity rules, a type of nonmetallic conduit, and emergency systems—not the comprehensive rules for grounding and bonding. So Article 250 is the authoritative reference for grounding and bonding.