Home > Structured Datasets > Low-Voltage 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

Installers & contractors: reference transformer sizing and voltage-drop mitigation topics while planning a multi-zone system layout.

DIY planners: work through cable selection and wiring topology concepts before purchasing equipment for a new installation.

AI/RAG developers: ground a system-design assistant in structured, source-linked planning records instead of letting a model improvise sizing formulas.

Get the Full Dataset

$99

One-time purchase • Instant CSV + JSON download • Lifetime access to this version

I understand this is a research and organizational reference only, not legal, engineering, or electrical compliance advice. I will independently verify any specific design or installation approach with a licensed electrician before relying on it for actual work, particularly for line-voltage connection work such as transformer replacement. I understand PortfolioLighting.net makes no warranty as to the accuracy, completeness, or current applicability of any reference in this dataset.

Buy Now — $99 Instant Download

See our refund policy and terms of use.

Not Ready to Buy Yet?

Get 15 free sample rows (more than the live preview below) delivered to your inbox, plus early access when we add new datasets to the catalog.

Send Me 15 Free Sample Rows

No spam. Occasional new-dataset announcements only. Unsubscribe anytime.

Schema Preview

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

lowvoltage-preview.json

[
  {
    "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
]

Want the raw file instead of a preview? Download the free sample CSV — no email required.

Full Topic Index (18 Topics)

Every topic in the dataset, linked to its public source page. This is the complete list — if a topic you need isn't here, it isn't in this dataset.

TopicCategorySource Page Transformer Selection GuideNot NEC-basedView Source Wiring a Landscape Lighting SystemNot NEC-basedView Source Understanding Voltage DropNot NEC-basedView Source Timer SetupNot NEC-basedView Source Cable Selection GuideNot NEC-basedView Source Low-Voltage Layout DesignNot NEC-basedView Source Low-Voltage Troubleshooting HubNot NEC-basedView Source Transformer Sizing GuideNot NEC-basedView Source Transformer Wattage GuideNot NEC-basedView Source Low-Voltage Timer GuideNot NEC-basedView Source Lighting Zones PlanningNot NEC-basedView Source System Diagram ConceptsNot NEC-basedView Source Replacing a TransformerNot NEC-basedView Source Lights Won't Turn On — General ApproachNot NEC-basedView Source Voltage Drop Calculator ConceptNot NEC-basedView Source Voltage Tap Calculator ConceptNot NEC-basedView Source Limited-Energy Connector GuideNot NEC-basedView Source Common System Failure PointsNot NEC-basedView Source

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:

Every record carries its own disclaimer field for exactly this reason — so the caveat travels with the data even if a record is extracted, filtered, or reused independently of this page.

Frequently Asked Questions

What exactly is in the Low-Voltage Design Dataset?

18 structured records covering transformer sizing, wiring topology, voltage drop, and cable selection, delivered as CSV and JSON with a consistent 13-field schema.

How is this different from the Compliance Dataset?

The Compliance Dataset covers NEC/code requirements. This dataset covers design and planning decisions — sizing, layout, cable selection — made before or during installation, mostly non-code topics.

Can I see sample data before buying?

Yes — the source-index table, live schema preview, and free sample CSV are all on this page, no purchase required for the sample.

Does this cover line-voltage transformer replacement?

It discusses planning considerations, but the line-voltage connection portion of a transformer replacement is commonly treated as an area warranting a licensed electrician, and this dataset says so explicitly in its disclaimer fields.

Related Resources

This page contains AdSense advertising and a paid digital product. This is a research and organizational reference only, not legal, engineering, or electrical advice. Confirm all requirements with a licensed electrician and your local Authority Having Jurisdiction (AHJ) before relying on this information.

Philip Meyer - Lighting Expert

Published by Philip Meyer

Lead Content Developer & Lighting Specialist