Power always on, or power on/off

I'd also say it depends upon duty cycle (how often you use it) and how much power you have available. The bulk of my collection sits on a single 20 amp breaker which would be somewhat taxed by having every machine on. I'd say if a machine has less than a 5% duty cycle leave it off. I'd be surprised if the stress of one power cycle a month is more than the stress of being continuously on. I'd also say you should turn on every machine at least a couple hours a month if possible. (long enough to reach normal operating temperatures, blow the dust out of the vents, dry things out, loosen up lubricants, keep the electrolytic caps polarized, exercise the drive heads, make it feel wanted) Eric On 4/23/05, William Donzelli <aw288 at osfn.org> wrote: