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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Hi William, Brian<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>There was a change made to the XW Distribution Panel to accommodate
nine 2-pole breakers for 3 inverter installations, as the original version was
with 8 slots only. Unfortunately the original 8 breaker capacity version is
still working its way through the inventory in the field – so we do have a
kit with the new front panel we can provide to use with 3 unit systems.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Please contact me off list if you want to set that up.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Cheers,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Mark<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Mark Edmunds, P.Eng<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Director New Product Development<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Xantrex Technology Inc.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>mark.edmunds@xantrex.com<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
re-wrenches-bounces@lists.re-wrenches.org
[mailto:re-wrenches-bounces@lists.re-wrenches.org] <b>On Behalf Of </b>William
Miller<br>
<b>Sent:</b> Tuesday, April 28, 2009 11:43 PM<br>
<b>To:</b> RE-wrenches<br>
<b>Subject:</b> Re: [RE-wrenches] 3 Xantrex XW system<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Brian:<br>
<br>
We reviewed the installation instructions and found them lacking in a few
regards:<br>
<br>
1. The Xantrex system allows for bypass of the inverters only with external
devices and they do not allow choosing between inverter, utility *or*
generator.<br>
<br>
2. The diagram on page 2-36 shows nine 2 pole breakers. Today I counted
the spaces available for breakers and again this evening via job photographs,
and I see only room for eight 2 pole breakers. I will check this again
tomorrow, but I do not think the Xantrex suggested breaker arrangement will
actually fit.<br>
<br>
I have been toying with this dilemma. With 5 breakers on the output, one
could contrive to select between utility, generator *or* inverter for output
bypassing. This, unfortunately, leaves inadequate room for inverter input
breakers.<br>
<br>
I think the ideal scenario would use two Power Distribution Panels. One
would be dedicated to AC and the other to DC (this would be even ore ideal if
the PDP did not cost an unbelievable amount of money). A power flow
diagram of how Xantrex suggests this be wired and also of another concept I
have been developing are on our web site at: <a
href="http://millersolar.com/practices/Technical_Procedures/xw/3XW.html">http://millersolar.com/practices/Technical_Procedures/xw/3XW.html<br>
<br>
</a>Thanks for the input.<br>
<br>
William Miller<br>
<br>
<br>
At 10:00 PM 4/28/2009, you wrote:<br>
<br>
<o:p></o:p></p>
<p class=MsoNormal>Content-Language: en-US<br>
Content-Type: multipart/alternative;<br>
boundary="_000_69FFF3377EEF8747A4FDE2CC20CD1DEDA66442A92DREDEXCHaeesol_"<br>
<br>
William,<br>
<br>
In the Xantrex “XW Power System Installation Guide”, pages 2-34 to
2-37, there is a parts list and some diagrams on the wiring of a 3-inverter
system. The parts list calls for two 5 ft (62” hole-to-hole) 4/0 battery
cables to connect the third inverter up to the Distribution Panel.<br>
<br>
Also shown is the use of an external bypass switch to make up for the lack of enough
AC breaker spaces in a single Distribution Panel. It shows a breaker/interlock
panel, but a 2-pole manual transfer switch will also work. Either way, it
should be rated for at least 200A.<br>
<br>
Brian Teitelbaum<br>
AEE Solar<br>
<br>
<br>
<br>
<b>From:</b> re-wrenches-bounces@lists.re-wrenches.org [<a
href="mailto:re-wrenches-bounces@lists.re-wrenches.org">mailto:re-wrenches-bounces@lists.re-wrenches.org</a>]
<b>On Behalf Of </b>William Miller<br>
<b>Sent:</b> Tuesday, April 28, 2009 8:49 PM<br>
<b>To:</b> RE-wrenches<br>
<b>Subject:</b> [RE-wrenches] 3 Xantrex XW system<br>
<br>
Friends:<br>
<br>
We are in the midst of installing our first 3 XW system. Several
questions arose during our work today. I appreciate input any of you
might have.<br>
<br>
1. Did you find the leads from the Xantrex connection ki long enough for
the third inverter?<br>
<br>
2. How many AC sources did you connect?<br>
<br>
3. Did you provide bypass capabilities?<br>
<br>
4. How did you interlock the bypass capabilities?<br>
<br>
5. Did you use one or two Power Distribution Panels?<br>
<br>
6. Can you offer any advice on how best to connect this equipment?<br>
<br>
Thanks in advance.<br>
<br>
William Miller<o:p></o:p></p>
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