GB300-Class Data Center Drawings: Electrical, Structural and Network Reference Designs

What Is Inside the Set

The electrical drawing book (E-100/E-300 series, 88 pages) carries the 12.47 kV single-line diagrams, transformer and fuse details (2500 kVA, 12.47 kV–480Y/277 V), zone one-lines for six-path and four-path radial distribution to 42-rack GPU halls at 136 kW per rack, generator feeder interfaces, grounding, and buried-crossing civil interfaces. The structural set (170 pages) contains the design basis and parameters, the prefabricated steel drawings, and the full technical specification. The network brief (58 pages) defines GPU hall topology, cabling architecture and interfaces. All three disciplines describe one coordinated GB300-class facility design — the same program documented across the 104-article Data Center Lab.

Who These Drawings Are For

• Colocation and data center developers evaluating GB300-class readiness: what 136 kW-per-rack duty actually demands of a building.
• Electrical engineers looking for a real data center one-line diagram: 12.47 kV service to 480 V four-path distribution, not a marketing block diagram.
• Mechanical and liquid-cooling engineers studying CDU feeder protection, coolant distribution and the electrical–cooling interface.
• Network architects planning GPU cluster topology and hall cabling.
• Structural engineers checking floor loading and steel framing for ~1.4 t liquid-cooled racks.
• Bitcoin miners converting sites to AI hosting: what a compliant GPU hall requires beyond a container row.
• GPU cloud and neocloud founders who need to see a whole coordinated drawing set before hiring anyone.
• Investors and lenders running technical due diligence on AI data center projects.
• General contractors and estimators quantifying scope from a construction-drawing-style set.
• Utility and interconnection planners reading the load architecture behind a GPU hall service request.
• OEM and vendor application engineers aligning equipment offers to an integrated reference design.
• Prefab and modular builders studying a steel building system carrying dense mechanical loads.
• Students and researchers who want real drawings instead of textbook schematics.

Guides to the Set

• Data center one-line diagram: real 12.47 kV examples explained
• What a GB300 NVL72 deployment demands of a data center building
• AI data center design and construction: how the three disciplines coordinate

Questions Engineers Ask

Are these drawings suitable for NVIDIA GB300 NVL72 deployments?

The electrical, cooling-interface and structural basis is designed around 136 kW A/B dual-input, direct-liquid-cooled rack duty — consistent with GB300-class rack systems (~135–150 kW per rack, fully liquid cooled). They are Design Development — Public Edition reference designs: verify every interface against your OEM's current rack data before use. GB300 is a product of NVIDIA Corporation; K&K Data Service Inc. is not affiliated with NVIDIA.

Can I build from these drawings?

No. They are published at Design Development — Public Edition P1 status for study and evaluation. They are not construction issues, carry no Engineer of Record seal, and every sheet states its own assumptions and open items.

Do I need to register or pay to download?

No. Every file is a direct download with a published SHA-256 checksum so you can verify integrity.

What electrical architecture do the one-line diagrams show?

12.47 kV medium-voltage service stepping to 480Y/277 V through 2500 kVA transformers, with radial multi-path distribution (loadbreak → fused primary → transformer → secondary breaker → ATS → 2 MW UPS → PDU) to 42-rack GPU zones at 136 kW per rack, plus generator feeder interfaces and buried-utility crossing details.

How is structural design handled for ~1.4-tonne GPU racks?

The structural set covers the prefabricated steel building system: design basis and parameters, member and connection drawings, and technical specifications — the load path that carries dense liquid-cooled rack rows and overhead services.

What does the network reference design cover?

GPU hall network topology, cabling architecture and interface definitions for a liquid-cooled hall, at reference-design depth.

What does AIDC mean, and is this an AIDC reference design?

AIDC is industry shorthand for AI data center. Yes — this set is an AIDC reference design: an AI data center construction drawing package (electrical, structural, network) built around liquid-cooled GPU rack infrastructure rather than enterprise IT loads.

Who publishes these and why are they free?

K&K Data Service Inc. publishes its working engineering record — including the 104-article Data Center Lab — because we would rather be examined than take our word for it. The drawings carry attribution terms inside each document.