Standards & references cited

• NEC 680.26 intent & scope: equipotential bonding to reduce voltage gradients; overview of (B)(1)–(7).
  ECM Web
• NEC 680.26(B)(2) perimeter surfaces: 3 ft zone; 12×12 in copper grid option; four points around conductive shells; note on nonconductive shells.
  Electrical License Renewal+1
• NEC 680.26(C) pool water bonding: ≥ 9 in² conductive surface in contact with the water.
  Electrical License Renewal
• NEC 250.8 connection methods for grounding/bonding (listed pressure connectors, exothermic, no solder-dependent joints).
  Mypdh.engineer+1
• NEC 680.7 (grounding & bonding terminals): terminals/lugs identified for wet/corrosive locations; many marked “direct burial/DB.”
  Electrical License Renewal
  Note: Local adoption cycles vary (e.g., some jurisdictions are on 2020 NEC). Always check your AHJ’s currently enforced edition.