like, what's your phase? [RE-wrenches]

[i2p at aol.com]

Your free subscription is supported by today's sponsor:
-------------------------------------------------------------------
Get a Free T-Mobile Sidekick II plus $500 towards service! 
Click here.
http://click.topica.com/caaduFNbz8Qcsbz9JC9a/ProductTestPanel
-------------------------------------------------------------------


In a message dated 5/12/2005 8:52:32 AM Pacific Standard Time, 
solar at ecoisp.com writes:
I've always wondered what the point of the "two phase system" is.  Where is 
it grounded?  How is it configured to put a balanced load on the 
generator?  Would it be set up so as to get two, two phase systems from one 
source?  This has always been a brain teaser.  I've never seen a two phase 
system.

Drake
Hi Drake, this is how I think of it.

Considering a 120/240 setup, we can think of it as two 120 vac phases (180 
deg out of phase). Since they are out of phase we can represent them as V1=120 
sinwt and
V2=(-)120 sinwt. The voltage difference (V1-V2)= 240 sin wt (remember the 
minus a minus from algerbra = a positive). Now the difference (as measured from 
L1 to L2) is single phase 240 vac. It is derived from two 120 vac " phases". 
sharing a common neutral ( center tap of the service).

Don

[Non-text portions of this message have been removed]

Your free subscription is supported by today's sponsor:
-------------------------------------------------------------------
Get both the MiFi XM Satellite Radio and an Apple iPod for Free! 
http://click.topica.com/caadtaJbz8Qcsbz9JC9f/ProductTestPanel 
-------------------------------------------------------------------

- - - -
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
--^----------------------------------------------------------------