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<DIV><SPAN class=968373415-25112008><FONT face=Arial color=#0000ff size=2>The XW
would have the inverter by-pass breakers assembly if you installed it w/ the
conduit box, so the second transfer switch is not necessary.
</FONT></SPAN></DIV>
<DIV><SPAN class=968373415-25112008></SPAN><SPAN class=968373415-25112008><FONT
face=Arial color=#0000ff size=2>Reset your gen AC "transfer" cycles to
their minimum as well as your generator low voltage parameters to 110 volts (IF
it is a quality gen set & it produces a constant 120V), you should see no
more lag transferring off the gen.Make sure you reset the settings in ALL the
VFXs.</FONT></SPAN></DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV></DIV>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left><FONT
face=Tahoma size=2>-----Original Message-----<BR><B>From:</B>
re-wrenches-bounces@lists.re-wrenches.org
[mailto:re-wrenches-bounces@lists.re-wrenches.org] <B>On Behalf Of </B>Geoff
Greenfield<BR><B>Sent:</B> Tuesday, November 25, 2008 9:39 AM<BR><B>To:</B>
RE-wrenches<BR><B>Subject:</B> Re: [RE-wrenches] Integrating with a whole
house generator<BR><BR></FONT></DIV>
<DIV style="FONT-SIZE: 12pt; COLOR: #000000; FONT-FAMILY: Times New Roman">
<P>It all depends on the homeowners expectations (and what THEY think is a
reasonable critical load). Your scheme looks like it would work - (I
might include a second X-fer switch to run the inverter supported loads off
the genny if the grid AND the inverter are out).</P>
<P> </P>
<P>Second issue is transfer speed and power drop out. I am not sure of
the XW, but I have found that outback is a very quick and clean switch (no
computer/com drops) from grid to backup... like a UPS. However... it is
NOT as smooth when turning off the genny on back up mode. Lights all
fade as genny coughs off and inverter kicks back over to batts. I always
make sure customer computer has a deadicated UPS.<BR><BR></P>
<DIV>For a brighter energy future,<BR><BR>Geoff Greenfield<BR>Founder and
CEO<BR><FONT size=4><STRONG>Third Sun Solar & Wind Power
Ltd.<BR></STRONG></FONT>340 West State Street, Unit 25<BR>Athens, OH
45701<BR><BR>740.597.3111 Fax
740.597.1548<BR>www.Third-Sun.com<BR><BR><EM><FONT size=4>Clean Energy -
Expertly Installed<BR></FONT></EM><BR><BR><BR><BR></DIV><BR><BR>----- "William
Miller" <wrmiller@charter.net> wrote: <BR>> Friends:<BR>> I am
bidding an installation in which the customer owns a whole house <BR>>
generator. The generator is 30 KVA and we will be installing a 4.5 or
6.0 <BR>> KVA XW system. Obviously, the inverter will not power the
entire <BR>> house. If we segregate the non-critical loads and
connect them to a <BR>> grid-fed panel, the generator will not power them.
If we let the generator <BR>> run every time there is an outage, this
negates the need for a inverter <BR>> system. What to do?<BR>> The
transfer switch sends a two wire start signal to the generator upon a <BR>>
grid outage. After the transfer switch senses generator voltage, it
<BR>> effects a transfer.<BR>> My brainstorm is to intercept that two
wire start signal. I will connect <BR>> it instead to the XW
inverter. We will segregate the loads, feeding the <BR>> critical
loads from the XW and the Non-critical loads from the output of <BR>> the
transfer switch. In the case of a grid outage, the critical loads will
<BR>> receive uninterrupted power. The Non-critical loads will not
have power <BR>> unless the generator is started by the XW. Once the
XW (or the home owner) <BR>> starts the generator, the transfer will occur.
We will put a control panel <BR>> in the house so the home-owner can
start the generator if the No-critical <BR>> loads are needed.<BR>> This
seems clever to me, but I am biased. Am I missing something???<BR>>
William Miller<BR>> _______________________________________________<BR>>
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