In an earlier contribution to this discussion,
Thomas Prufer wrote:

On Tue, 13 Jan 2004 12:07:35 -0000, "Set Square"
wrote:

All this makes me feel that it's resonably believable - and that the
tolerances stated in the spec are rather conservative.

Ah, but bulbs are resistive loads. Know a fellow who'd tested a few,
and found that the cheaper ones didn't do too well with inductive and
capacitive loads.

That said, it should be fine for getting the numbers in the right
ballpark.


Thomas Prufer


Well, with the inductive loads on which I've tried it (e.g. central heating
pump) the displayed numbers stack up - in that displayed watts = displayed
volts x displayed amps x displayed power factor. I know that doesn't prove
that its *right* - but it's got a fighting chance!

The fact that it displays these parameters separately means that you can
also work out VA (ignoring power factor) which is probably more relevant
than watts when considering the use of gennys or inverters for emergency
standby use.
--
Cheers,
Set Square
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