Low-Voltage Landscape Lighting Design Dataset

What Makes This Dataset Different

Low-voltage system design questions — what transformer size, what wire gauge, how much voltage drop is too much — usually get answered inconsistently across forums and product pages. This dataset structures 18 planning-stage topics into one consistent schema, distinct from both the Compliance Dataset (code requirements) and the Diagnostic Tree Dataset (after-the-fact symptoms) — this one covers decisions made before or during installation.

It is built from PortfolioLighting.net's own low-voltage design content library, restructured for reuse in sizing calculators, installation planning tools, and RAG pipelines.

Who Actually Uses This

Schema Preview

Two real, unedited sample records from the actual dataset — not illustrative placeholders.

[
  {
    "url": "https://www.portfoliolighting.net/portfolio-lighting-transformer-sizing-guide.html",
    "topic": "Transformer Sizing Guide",
    "general_code_reference": "Not NEC-based (load sizing concept, related generally to NEC 220 principles)",
    "risk_level": "Low",
    "internal_reference_code": "PLV-008"
  },
  {
    "url": "https://www.portfoliolighting.net/how-to-replace-a-landscape-lighting-transformer.html",
    "topic": "Replacing a Transformer",
    "general_code_reference": "Not NEC-based (installation/replacement topic); line-voltage connection work may intersect NEC concepts",
    "risk_level": "Medium",
    "internal_reference_code": "PLV-013"
  }
  // ... 16 additional structured topics in the full dataset
]

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Key Topic Areas Covered in This Dataset

The dataset spans 18 topics; these are the recurring themes most records fall under.

Transformer Sizing & Wattage

Matching transformer capacity to total connected fixture load with appropriate headroom. See Transformer Sizing Guide.

Voltage Drop & Wire Gauge

How voltage drop increases with run length and current draw, and mitigation strategies like larger gauge or multi-tap transformers. See Understanding Voltage Drop.

Wiring Topology & Zoning

Daisy-chain, hub-and-spoke, and loop topology concepts, plus dividing a system into independently controlled zones. See Low-Voltage Layout Design.

What This Dataset Is Not

To set accurate expectations before you buy:

• It is not legal, engineering, or electrical advice, and does not replace a licensed electrician.
• Line-voltage connection work (like transformer replacement) is commonly treated as an area warranting professional installation.
• Sizing and voltage-drop guidance is general — always confirm against your specific fixture and run-length measurements.
• It does not include code/permit requirements — see the Compliance Dataset for that.