I found this 18 AWG 5-conductor 600 v shielded Tray Cable online: http://belden.catalog.belden.com/en/Products/Detail/PF_28335AS
or http://www.southwire.com/products/oem-type-tc-control-cable-xhhw-solonon-jacket-renewable-cable.htm Now I guess the question is whether the shielding is adequate to avoid false AFCI tripping with SMA's inverters. Interestingly, Fronius explicitly shows the control wire in the same conduit as the PV output circuits. http://www.fronius.com/cps/rde/xbcr/SID-9806262E-5771F465/fronius_usa/RapidShutdownBoxMarch_441527_snapshot.pdf Cheers, August -----Original Message----- From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of frenergy Sent: Monday, August 29, 2016 9:58 PM To: RE-wrenches Subject: Re: [RE-wrenches] Getting ready for 2014 NEC rapid shut down with string inverters so it looks like a shielded 5 conductor control bundle might work? Bill Feather River Solar Electric On 8/29/2016 1:42 PM, Matt Partymiller wrote: > August, > > I am not answering your question but SMA tech support folk have > specifically told me that putting our 600V jacketed control wire in > the same EMT as the DC strings is leading to false arc fault trips. > > Matt > > > On Mon, August 29, 2016 3:42 pm, August Goers wrote: >> Hi Wrenches, >> >> >> >> >> I’m preparing for 2014 NEC 690.12 Rapid Shutdown to hit in California >> January 2017. Specifically, I’m trying to determine what to do for >> new string inverter based installations. I’m assuming that >> microinverter, AC modules, and systems with power-level electronics >> (SolarEdge etc) are innately compliant. >> >> >> >> I spent a while researching SMA’s rapid shutdown system. It appears >> that we need five 16 or 18 AWG conductors for the control circuit. >> Any recommendations on what type of wire to use assuming we run it in our >> EMT >> run down from the roof to inverter? Tray Cable might work? >> >> >> >> Best, >> >> >> >> >> August >> >> >> >> >> >> >> August Goers >> >> >> Luminalt Energy Corporation >> >> >> m: 415.559.1525 >> >> >> o:415.641.4000 >> >> >> aug...@luminalt.com _______________________________________________ _______________________________________________ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org _______________________________________________ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
