Hi, I think I haven't heard from Geoff of Oz for a while, are you still around? Came to think about Geoff because I have now blown two fuses of VAX 6000's internal 110V power hookups (the main power box has three what looks like standard 110V receptacles.) But not all of them are equal, so it seems. The one that's not reachable from the outside seems to be protected by a low-rated fuse. I suppose now that this is where the backup battery is to be hooked up an nothing else. I tried to drive an RA92 from there and it always burned the fuse when the drive spins up. I'm releaved now because initially I thought I might have destroyed the drive (some inner short because of dust and dirt.) But it's just that fuse. Too bad that I can't power the second external receptacle. It's this weird 3-phase conversion issue where you have to use the phase that connects to this internal receptacle but not both of those that connect to the two external receptacles. How did you, Geoff, hook up both of your RA9x down in your VAX6400? thanks, -Gunther -- Gunther Schadow, M.D., Ph.D. gschadow(a)regenstrief.org Medical Information Scientist Regenstrief Institute for Health Care Adjunct Assistant Professor Indiana University School of Medicine tel:1(317)630-7960 http://aurora.regenstrief.org