On Tue, Jul 13, 2021 at 10:21 PM Brian Roth via cctalk <[email protected]> wrote: > Its going to be interesting for sure. I am currently running some better > power into the shop. The requirements for the 6000 is 3 phase. I just > finished reassembling the power inlet box and I'm pretty sure it will run > fine on 2 phases. I had to trace the right phases to energize the contactor > and power the convenience outlets.
My memory for most of the larger VAXen is that they balanced power supplies across the phases, and *might* have used 3-phase blower motors in the biggest boxes (8800 for example). Definitely check wiring, but the 6000 series may well have single-phase blowers. When we got an 8530 at work in the early 90s (needed a machine with a Nautilus bus for specific hardware testing), it was definitely a 3-phase machine and since we were in an industrial setting, I just tapped into our panel at the back of the warehouse and wired up a 3-phase outlet for it. It never sat on our datacenter floor as a result, but it really only ever had one purpose and that wasn't a daily driver. Too much power, too much heat for so few employees (at that stage of the company). -ethan
