On 28/03/2021 06:13, micky wrote:

I'd appreciate it any replies went to all three groups that this is
posted to so I don't have to read all three to see all the replies.
When I started in Usenet, that was considered the proper way.


Yup - and *much* preference to multiposting. Cross-posting to completely
different or trophy groups was the annoyance, mostly done by trolls.


How much electricity do these things use when not in use?

It's less than the electricity used when they are in use ;-)

However less - this depends on age, construction, type, and how much
power/cost you believe is significant.

Find yourself an AC plugin power meter and measure?

There are other metering methods for non-AC classes of equipment, a
clamp meter is a non-invasive measurer of current (and them hall-types
that also measure DC current are pretty useful in cars).

--
Adrian C