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3.1.1.6 high voltage wiring

High-voltage wiring is an important enabler for high-power electrification. Following Ohm’s Law, increasing the system voltage allows for a proportional decrease in current for the same power output. Since current determines the conductor's cross-sectional area, high-voltage systems allow us to replace heavy, thick cables with significantly lighter, thinner ones. This weight reduction is critical; on large airframes, optimizing the Electrical Wiring Interconnection System (EWIS) can save over hundreds of kilograms in mass. Furthermore, reducing current minimizes resistive heating losses, boosting overall powertrain efficiency. For the 2+ megawatt motors required for commercial flight, high-voltage distribution one of the ways to keep the "weight penalty" low enough to make decarbonised regional travel a reality.