Watts a horse power [RE-wrenches]

[Kurt Nelson]

Your free subscription is supported by today's sponsor:
-------------------------------------------------------------------
Oreo's
Take our Nationwide Oreo Survey.
Receive a Free* Restaurant Gift card of your choice or a one year 
supply of Oreo's. Hurry, limited time only! 
http://click.topica.com/caadOvJbz8Qcsbz9JC9a/CookieSurvey
-------------------------------------------------------------------

Hey Ray, Windy and all,

I will mention that the 2,400 watt SQ1HP pump has too small a wire (well
driller installed the pump).  The total run was about 50 feet beyond the
maximum run for number 12 and they used number 12.  I told the client it
should be replaced but he won't do it because it "works" and he doesn't
want to hassle with the driller dude.

Correct me if I'm wrong, but with a regular submersible I think the
voltage drop would not result in a greater current draw, rather lower
voltage to the motor and reduced performance and GPM.  Is it possible
that the inverter and controls on the SQ might actually result in a
higher current draw due to the slightly lower voltage supplied??

Just a thought -- Kurt


From: Ray Walters [mailto:ray at solarray.com] 
Sent: Friday, August 12, 2005 5:48 PM

>As for the 1 HP SQ pump drawing 2400 watts, that sounds excessive. It's
a 
>different motor technology but my impression is that the efficiency is 
>about the same as conventional pumps (after startup).

The  3" diam. SQ pumps are slightly less efficient than their 4 "
cousins, 
at least according to Grundfos's design software that predicts annual 
energy use. That 2400 watt draw is close to the same DC number I saw
with a 
1 Hp SQ at 350 ft to water and 40 psi. Inverter was an SW plus (Pyramid 
psuedo sine wave?).

Your free subscription is supported by today's sponsor:
-------------------------------------------------------------------
Ben & Jerry’s® or Häagen-Dazs®?
Take our Nationwide Ice Cream Survey today! Receive a FREE* $100 
Restaurant Gift Card of your choice or $100 worth of Ben & 
Jerry’s® or Häagen-Dazs® ice cream for participating!
http://click.topica.com/caadOvZbz8Qcsbz9JC9f/Ice Cream Research Survey
-------------------------------------------------------------------

- - - -
To send a message: RE-wrenches at topica.com

Archive of previous messages: http://lists.topica.com/lists/RE-wrenches/read

List rules & etiquette: www.mrsharkey.com/wrenches/etiquette.php

Check out participant bios: www.mrsharkey.com/wrenches/

Hosted by Home Power magazine

Moderator: michael.welch at homepower.com
--^----------------------------------------------------------------
This email was sent to: michael.welch at homepower.com

EASY UNSUBSCRIBE click here: http://topica.com/u/?bz8Qcs.bz9JC9.bWljaGFl
Or send an email to: RE-wrenches-unsubscribe at topica.com

For Topica's complete suite of email marketing solutions visit:
http://www.topica.com/?p=TEXFOOTER
--^----------------------------------------------------------------