Busbar
A solid metal conductor distributing high current within a rack or system, replacing bulky cabling.
Current numbers
50–51 V DCNVIDIA DGX GB200 nominal busbar output; actual voltage to ground and burn/arc exposure govern the task
~3,000-3,300 lb (1.36-1.5 t)loaded NVL72-class rack wet — one 48U cabinet (frame ~185 kg + 18 compute trays + 9 NVLink-switch trays + 8 power shelves + copper backplane/busbar + manifolds + in-rack coolant); a class screening band, not one HPE rating
5,184in-rack copper NVLink cables in an NVL72 — the copper-mass reality that drives the busbar-cooling fork