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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='color:#1F497D'>Hi August,<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>I do not see where the code requires that the disconnect DIRECTLY support the locking functionality. Any breaker can be locked open with standard LOTO hardware, and in my opinion would meet this code requirement of being CAPABLE of being locked in the open position. It does not say that it must have a ‘lockable disconnecting means’, as the definition describes.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><a href="https://www.bradyid.com/en-us/66321/prod-2024847.html?cat=BRID2993902">https://www.bradyid.com/en-us/66321/prod-2024847.html?cat=BRID2993902</a><o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Glenn<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><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 [mailto:re-wrenches-bounces@lists.re-wrenches.org] <b>On Behalf Of </b>August Goers<br><b>Sent:</b> Thursday, April 28, 2016 6:11 PM<br><b>To:</b> RE-wrenches<br><b>Subject:</b> [RE-wrenches] 2014 NEC 705.22 disconnect for inverter capable of being locked<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Hi Wrenches,<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>We have a particular plan checker who wants us to provide a <u>lockable</u> AC disconnect for our inverter output circuit. His particular issue is that he wants the locking mechanism to be installed and on site. Here is a little NEC background info:<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'>2014 NEC 705.22 Disconnect Device<o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'>The disconnecting means for ungrounded conductors shall consist of a manually or power operable switch(es) or circuit breaker(s) with the following features:<o:p></o:p></p><p class=MsoListParagraph style='margin-left:1.0in'>Located where readily accessible<o:p></o:p></p><p class=MsoListParagraph style='margin-left:1.0in'>Externally operable without exposing the operator to contact with live parts and, if power operable, of a type that could be opened by hand in the event of a power-supply failure<o:p></o:p></p><p class=MsoListParagraph style='margin-left:1.0in'>Plainly indicating whether in the open (off) or closed (on) position<o:p></o:p></p><p class=MsoListParagraph style='margin-left:1.0in'>Having ratings not less than the load to be carried and the fault current to be interrupted. For disconnect equipment energized from both sides, a marking shall be provided to indicate that all contacts of the disconnect equipment might be energized.<o:p></o:p></p><p class=MsoListParagraph style='margin-left:1.0in'><i>Informational Note to (4): In parallel generation systems, some equipment, including knife blade switches and fuses, is likely to be energized from both directions. See 240.40.</i><o:p></o:p></p><p class=MsoListParagraph style='margin-left:1.0in'>Simultaneous disconnect of all ungrounded conductors of the circuit<o:p></o:p></p><p class=MsoListParagraph style='margin-left:1.0in'>Capable of being locked in the open (off) position<o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'> <o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'>NEC 110.25 Lockable Disconnecting Means:<o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'>Where a disconnecting means is required to be lockable open elsewhere in this Code, it shall be capable of being locked in the open position. The provisions for locking shall remain in place with or without the lock installed. <o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>Many times we are using a standard back-fed circuit breaker to comply with 705.22. Then we can supply a handle padlock attachment such as the one shown for Square D:<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal><a href="http://static.schneider-electric.us/assets/pdf/retail/QO-and-Homeline-Accessories.pdf">http://static.schneider-electric.us/assets/pdf/retail/QO-and-Homeline-Accessories.pdf</a><o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>Does anyone else have experience installing these breaker handle padlock attachments? My concern is whether we can find them for all of the old types of breakers that we have to deal with. Also, our plan checker is requiring that this handle padlock attachment accessory is installed at the time of our inspection. Is anyone else dealing with similar issues?<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>Best,<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>August<o:p></o:p></p><p class=MsoNormal>Luminalt<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p></div></body></html>