<html><body><div style="color:#000; background-color:#fff; font-family:verdana, helvetica, sans-serif;font-size:16px"><div><span></span></div><div></div><div id="yui_3_16_0_1_1433353760441_28766">We've been using ac coupling with Magnum's when adding backup to a grid-tied system.</div><div id="yui_3_16_0_1_1433353760441_28783"><br></div><div id="yui_3_16_0_1_1433353760441_28799" dir="ltr">The switchover is automatic and fast. With the Magnums, there is need for a charge controller, but the installation and wiring does take more than a day (meow).</div><div id="yui_3_16_0_1_1433353760441_28858" dir="ltr"><br></div><div id="yui_3_16_0_1_1433353760441_28859" dir="ltr">Why would anyone want a manual transfer switch for backup? If you are gone and the power fails, it would be nice to know the sump pump will continue to work, the freezer will run and the heating system will keep the pipes from freezing.</div><div id="yui_3_16_0_1_1433353760441_28784"><br></div><div id="yui_3_16_0_1_1433353760441_28892"><br></div><div id="yui_3_16_0_1_1433353760441_28893"> </div><div class="signature" id="yui_3_16_0_1_1433353760441_28768"><div id="yui_3_16_0_1_1433353760441_28767">Bill Hennessy<br>Berks Solar, LLC<br>371 Centennial Rd<br>Mertztown, PA 19539<br><br>o 610 682 4300<br>c 484 560 4666<br>NABCEP certified installer<br>PA contractor #44411<br>www.berkssolar.com</div></div><br> <div style="font-family: verdana, helvetica, sans-serif; font-size: 16px;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div dir="ltr"> <hr size="1"> <font face="Arial" size="2"> <b><span style="font-weight: bold;">From:</span></b> Tom Lane <tom@ecs-solar.com><br> <b><span style="font-weight: bold;">To:</span></b> "re-wrenches@lists.re-wrenches.org" <re-wrenches@lists.re-wrenches.org> <br> <b><span style="font-weight: bold;">Sent:</span></b> Tuesday, June 2, 2015 4:46 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> [RE-wrenches] Morningstar new battery backup , more comments and opinions<br> </font> </div> <div class="y_msg_container"><br>I would appreciate more opinions and comments on the new Morningstar Controller for Grid connected systems . I developed a simple transfer switch back for this type of application back when Grid Connected systems were 48 volts . This seems like a great idea for high voltage Grid Connected System . Tom<br><br>Sent from my iPad<br>_______________________________________________<br>List sponsored by Redwood Alliance<br><br>List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org" ymailto="mailto:RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.org</a><br><br>Change listserver email address & settings:<br><a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" target="_blank">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br><br>List-Archive: <a href="http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html" target="_blank">http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html</a><br><br>List rules & etiquette:<br>www.re-wrenches.org/etiquette.htm<br><br>Check out or update participant bios:<br>www.members.re-wrenches.org<br><br><br><br></div> </div> </div> </div></body></html>