Busbar
A solid metal conductor distributing high current within a rack or system, replacing bulky cabling.
Current numbers
250 kWOCP MGX 1.2 spec (rev. 1.2.0, Oct 2026): maximum rack dissipation, on a 5,000 A liquid-cooled 48 V busbar
50–51 V DCNVIDIA DGX GB200 nominal busbar output; the task's voltage to ground and burn/arc exposure govern
1,400 AGB200-generation busbar: 1,400 A at 48 V (~67 kW); a ~132 kW rack needs parallel feeds.