{
  "id": "shielding:shielding-shielded-cable",
  "collection": "shielding",
  "slug": "shielded-cable",
  "name": "Shielded mains cable and shielded conduit",
  "summary": "Screened NYM-style cable or metal conduit with a grounded screen removes the AC electric field at source, and is the correct fix during construction or rewiring.",
  "status": "verified",
  "lastVerified": "2026-08-12",
  "data": {
    "aliases": [
      "screened cable",
      "shielded romex",
      "metal conduit"
    ],
    "form": "paneling",
    "targets": [
      "elf-electric"
    ],
    "requiresGrounding": true,
    "failureModes": [
      "The screen must be bonded to protective earth at one defined point; an unbonded screen provides no benefit",
      "Does not reduce magnetic fields — those come from current, not from the conductor's field",
      "Only effective for the runs actually replaced; a single unshielded lamp flex can dominate the room again"
    ],
    "related": [
      "emitters:bedroom-wiring-electric-field",
      "shielding:demand-switch"
    ]
  },
  "sources": [
    {
      "id": "sbm-2024",
      "title": "Building Biology Evaluation Guidelines for Sleeping Areas (SBM-2024)",
      "publisher": "Institut für Baubiologie + Nachhaltigkeit (IBN)",
      "url": "https://buildingbiology.com/site/downloads/SBM-2024_EVALUATION_GUIDELINES_EN.pdf",
      "year": 2024,
      "kind": "ngo",
      "retrieved": "2026-08-12"
    }
  ],
  "links": {
    "self": "https://emfbase.com/api/shielding/shielded-cable",
    "html": "https://emfbase.com/shielding/shielded-cable",
    "markdown": "https://emfbase.com/shielding/shielded-cable.md",
    "collection": "https://emfbase.com/api/shielding"
  }
}