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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoPlainText>Hi Wrenches,<o:p></o:p></p><p class=MsoPlainText> <o:p></o:p></p><p class=MsoPlainText>Happy post 4th!<o:p></o:p></p><p class=MsoPlainText> <o:p></o:p></p><p class=MsoPlainText>My apologies if this has been covered ad-nauseum. But the 2011 NEC 690.16(A) and 690.16(B) sections continue to confuse many in the industry, including designers and equipment manufacturers.<o:p></o:p></p><p class=MsoPlainText> <o:p></o:p></p><p class=MsoPlainText>The consensus on 690.16(A) seems to be that touch-safe fuse holders on all source circuits satisfy this requirement. My question is do the integrated plastic fuse-pullers (think SMA sunny boy) satisfy the requirement? For string inverters, I know Chint is replacing all their source circuit fuse holders with the touch-safe type while SMA and AE are sticking with the integrated fuse pullers.<o:p></o:p></p><p class=MsoPlainText> <o:p></o:p></p><p class=MsoPlainText>2nd question: 690.16(B) seems to require a load-break disconnect at every combiner box to interrupt current flow. But what about on the re-combiner internal (or external) to a central inverter? Does a DC disconnect on the inverter side of the re-combiner fuses satisfy this? Many including SMA and AE are interpreting this as requiring an external DC disconnect on each circuit on the PV side of each re-combiner fuse. What do you think?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks,<o:p></o:p></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Jason M. Szrom, PE<br>Project Engineer<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";mso-fareast-language:DE'>———————————————————————————————————</span><o:p></o:p></p><p class=MsoNormal><b><span style='font-size:9.0pt;font-family:"Arial","sans-serif"'>Gehrlicher Solar America Corp.</span></b><span style='font-size:9.0pt;font-family:"Arial","sans-serif"'> – A Company of the M+W Group<br>21 Fadem Road, Springfield, NJ 07081<br>Phone 908-988-4459, Mobile 917-319-2517, Fax 908-219-4375<br></span><span style='font-size:9.0pt'><a href="mailto:jason.szrom@mwgroup.net"><span style='color:blue'>jason.szrom@mwgroup.net</span></a></span><span style='font-size:9.0pt;font-family:"Arial","sans-serif"'>, </span><span style='color:blue'><a href="http://www.gehrlichersolar.us/"><span style='font-size:9.0pt;color:blue'>www.gehrlichersolar.us</span></a></span><span style='font-size:9.0pt;font-family:"Arial","sans-serif"'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#1F497D;mso-fareast-language:DE'>———————————————————————————————————</span><span style='color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>