What Is 415V Distribution?_
415V distribution refers to the three-phase, 415-volt AC power architecture commonly deployed in high-density data centers to efficiently supply energy to racks. This system typically steps down from higher utility voltages via transformers and is distributed through power distribution units (PDUs) to rack-mounted equipment. It supports higher power densities than traditional 208V systems, making it suitable for GPU clusters that draw substantial current.
Technical Details
415V distribution uses a three-phase wye configuration with a line-to-line voltage of 415V and line-to-neutral voltage of 240V, allowing for balanced loads and reduced resistive losses. Power is delivered via hardwired or busway connections to rack PDUs, which then step down to 240V or 208V for individual server power supplies. The system requires careful phase balancing and grounding per the relevant electrical code to avoid neutral overloads. In GPU racks, 415V distribution can support higher wattage per rack without exceeding current limits on copper conductors.
How Leviathan Systems Works with 415V Distribution
In our field deployments, 415V distribution is the standard for powering H100 through GB200 NVL72 racks, where we connect the facility’s 415V feed to rack-level PDUs during the rack assembly phase. We verify phase rotation and voltage levels before commissioning to ensure stable power delivery to the GPU nodes.
Related service
GPU Rack Assembly & Rack-and-Stack →