[ale] Power Meter (Was: Re: [ale] About that firewall machine [Was]Re: [ale] unidentified processes)
tew at wiencko.com
tew at wiencko.com
Wed Dec 19 13:52:08 EST 2001
Split a spare power cord down the middle of the insulation (leaving both
conductors still insulated) and a clamp on ammeter works just fine.
Anything that "just measures power directly" will also have to have access to
one of the conductors. You can spend a whole lot of money doing this, or
you can get really close with some cheap tools and a little dexterity with
a power cord or cheap power strip you don't mind taking apart.
On Wed, 19 December 2001, jeff hubbs wrote:
>
> Geoffrey wrote:
>
> > John Wells wrote:
> >
> >>I'm interested in power consumption as well. I've
> >>finally got my laptop router working well, but I
> >>really hate to leave it on 'round the clock if I'm
> >>throwing money out the window.
> >>
> >>I'm assuming Radio Shack would be the place to find a
> >>meter like this?
> >>
> >
> > Yeah, but I've not seen a cheap amp meter. Standard vom meters you can
> > get for $10 at radio shack don't usually handle large currents ac
> > currents. I've not priced them in a while, but last time I checked,
> > they run > $100.
>
> Clamp-on ammeters are not going to get you what you need, especially
> since you would have to separate one conductor somewhere to put the
> sensor around.
>
> I have worked with a power meter before; it was a box, about 7"x7", with
> a few buttons and an LED display on the front. It had some outlets on
> the front and on the back and a power cord. Call an electrician's
> supply place and ask. The other thing I'd do is look at Fluke's Web
> site and see if they have anything that will measure power directly. It
> should be be some kind of RMS meter that accounts for power factor and
> will give you a reading in VA.
>
> - Jeff
>
>
> ---
> This message has been sent through the ALE general discussion list.
> See http://www.ale.org/mailing-lists.shtml for more info. Problems should be
> sent to listmaster at ale dot org.
---
This message has been sent through the ALE general discussion list.
See http://www.ale.org/mailing-lists.shtml for more info. Problems should be
sent to listmaster at ale dot org.
More information about the Ale
mailing list