In article ,
Andy Dingley wrote:
On 15 Sep, 08:54, Gordon Henderson wrote:

I did the power meter thing a year or 2 ago - went round the house
meansuring everything. The only real surprise was my HP Colour Laser
printer. In it's "low-power" idle mode it's sucking 30W. That now gets
turned off. Nothing else does because it's not worth the effort.

Be careful with that. Larger copiers and printers have drums that are
damaged by moisture and so contain an anti-condensation heater. It may
also not be sucking 30W continuously, just intermittently.

I did leave it for a couple of hours, just in-case it had a "deeper sleep"
mode, but didn't see any change. I only noticed it when I'd powered down
everything in my office a while back - or thought I had - heard a fan
running and traced it to the printer on the other side of the room,
even though I knew I'd not done any printing for a few days...

Not that bothered about it if it dies - it's now 6 years old and was a
freebie anyway! Good workhorse though.

Gordon