Re: Watt meters

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Gerry Reynolds" <gerryreynolds-at-earthlink-dot-net> 


Hi Terry,

So does this mean if I put a pure inductor across the mains (sized for say
10 amps), the watt meter will register no power being consumed??  If this is
true, how long has this been done this way?

Cheers,
Gerry R

 > Original poster: Terry Fritz <teslalist-at-twfpowerelectronics-dot-com>
 >
 > Hi,
 >
 > House type power meters certainly do measure real power.  They do it with
 > all the coils and induction disks and such (electronic nowadays).  In
fact,
 > if you supply power from your house back into the grid, the meter will
spin
 > backwards.  We did that on a solar power project once and I can verify
that
 > they really do go backwards.
 >
 > Cheers,
 >
 >          Terry
 >