Terry Blanton wrote:
On 12/27/06, Stephen A. Lawrence <[EMAIL PROTECTED]> wrote:
That's amazing -- I had no idea a 3 KW inverter could be had for a few
hundred bucks!
Careful, "modified sine wave" inverters can be quite noisy and will
not run some loads. A "true sine wave" inverter at 3 kW will cost you
upwards of a grand.
Right. $949 from Inverters-R-Us, to be precise, and that doesn't
include GST or import duty.
They actually mention running refrigerators, AC, and well pumps as
suggested aps for some of the cheaper dirty-output inverters, which
surprised me -- I thought electric motors were the things that really
cared about the shape of the waveform. Electronics should not, or so
I'd think.
A little more digging has turned up the gem that deep well pumps are
typically extremely power hungry, and typically need something over 3
kilowatts (at least to start them). The nameplate on the well motor
controller in the basement claims the motor's only about 3/4 horse,
which shouldn't need more than 1KW -- or so I'd have thought.
Terry
