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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Hi,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Situation is owner wants grid-tied battery backup. 200amp switch on side of home with two main panels buried deep in this older home = limited ability to create a critical loads panel. House has poor solar siting and really no space for battery room nor indoor space for Outback Radian setup.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Opportunity is that the meter and utility pole is right next to boat house 100 yards away. This boat house has great potential for solar and the space is perfect for batteries and inverters. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>My goal is to do “whole house backup” with customer doing manual load shedding as required. I’d like to interconnect at the service entrance conductors after the utility meter (next to boat house).<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>My dilemma is that the Radian has a 50-amp AC pass through rating so to prevent a bottleneck (code violation, too?) I think I need to stack 4 Radians to get 200 amp pass through capability for when grid is operating normally.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>As you might see, this is quite expensive and I think over-kill for the owner’s backup power requirements.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I know there are whole house auto transfer switches for generators.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Question – is there some sort of whole house auto transfer switch where both the grid and the backup position are open (still allows PV grid-tied operations to sell back to grid and partially offset loads during normal grid ops) but closes the grid connection during grid failures so that the battery backup provides power (with 2 Radians only).<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b>Howard “Scot” Arey<o:p></o:p></b></p><p class=MsoNormal>254-300-1228<o:p></o:p></p><p class=MsoNormal><a href="mailto:scot.arey@solarcentex.com">scot.arey@solarcentex.com</a><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><img border=0 width=209 height=205 id="Picture_x0020_1" src="cid:image001.jpg@01D08F0B.91ADE7D0" alt="logo from letterhead"><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>