This is a discussion on Re: PDP11/0x in my apartment? - VMS ; > Another solution for power might be to split the load across a couple > circuits (hopefully someone will comment if this is a bad idea, which I > think it might be, but can't remember why). It's a bad ...
> Another solution for power might be to split the load across a couple
> circuits (hopefully someone will comment if this is a bad idea, which I
> think it might be, but can't remember why).
It's a bad idea if one of your plugs is backwards and you run into a
ground loop. I've also had situations where there was a ground leakage
between two non-bolted racks. That *HURT*
Bond your racks together. Nuff said. As for power usage, I run two
RM03's and an RM80 on a single 20 amp circuit. The Decsystem20/20 is on
another, and a 20amp 240 volt service is more than enough for two TU77's
running at steam.
Chris
>
> Zane
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Christopher Zach wrote:
> ... As for power usage, I run two
> RM03's and an RM80 on a single 20 amp circuit.
Something that should be mentioned is that one should
spin up big old disk drives one at a time rather than
concurrently; the spin-up current is *much* greater
than the steady-state current. A power sequencer can
do this automatically. or one can simply turn them on
by hand.
