<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:arial, helvetica, sans-serif;font-size:12pt"><DIV>Most facilities that have 480 volt service have either 120/208 or 120/240 volt transformers to provide plug loads. You connect to one of these transformers. If in the rare case you do not have any plug load transformer you provide a 120-480 or 120-277 volt transformer. </DIV>
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<DIV>If your service is 277/480 V and you have 120-208 plug load transformer servicing the building, and your critical loads are 120 208 three phase, you can service these loads with the Three phase 120 volt outbacks set to three phase. If the load is about 10kW or larger you will need the new outback units (8kW in a box) </DIV>
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<B><SPAN style="FONT-WEIGHT: bold">From:</SPAN></B> Kristopher Schmid <solman@legacysolar.com><BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> RE-wrenches <re-wrenches@lists.re-wrenches.org><BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Thu, May 12, 2011 6:20:02 PM<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> [RE-wrenches] 120 volt inverter to 480 3 phase<BR></FONT><BR>Esteemed wrenches,<BR><BR>One of my students asked me today how you would (or if you could) connect a 120 volt outback inverter to a 277/480 volt 3 phase service. I said those three little words that men find so hard to say, "I don't know". Help, please.<BR clear=all><BR>-- <BR>Thanks,<BR>Kris Schmid<BR><BR>Legacy Solar, LLC<BR>864 Clam Falls Trail<BR>Frederic, WI 54837<BR>715-653-4295<BR><A href="http://www.legacysolar.com/" target=_blank rel=nofollow>www.legacysolar.com</A><BR><A href="mailto:solman@legacysolar.com" target=_blank
rel=nofollow ymailto="mailto:solman@legacysolar.com">solman@legacysolar.com</A><BR>
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