Re: [RE-wrenches] NEC 2014 690.12 Rapid Shutdown - for multiple arrays

Al, You may find this article and the one referenced to be helpful https://www.purepower.com/blog/nec-690-12-rapid-shutdown-length Best regards, Lloyd Hoffstatter Sunstruck Consulting Sent from Mail for Windows 10 From: Al Frishman

Re: [RE-wrenches] NEC 2014 690.12 Rapid Shutdown

ge was a compromise worked out with the solar industry >> (yes string inverter companies as well) in response to the first version of >> the proposal which was to require module-level shutdown. This is not >> module-level shutdown, it is PV output circuit shutdown (combiner b

Re: [RE-wrenches] NEC 2014 690.12 Rapid Shutdown

-boun...@lists.re-wrenches.org <mailto:re-wrenches-boun...@lists.re-wrenches.org> [mailto:re-wrenches-boun...@lists.re-wrenches.org <mailto:re-wrenches-boun...@lists.re-wrenches.org>] *On Behalf Of *Jeffrey Quackenbush *Sent:* Thursday, January 16, 2014 1:09 AM *To:* RE

Re: [RE-wrenches] NEC 2014 690.12 Rapid Shutdown

her > periodicals on this subject since it was a very far-reaching and > potentially confusing new requirement in the NEC. Thanks for your interest > and let’s keep the constructive dialogue going on the subject. It is time > to get involved in the NEC update process again. > > Bill

Re: [RE-wrenches] NEC 2014 690.12 Rapid Shutdown

terminals across which capacitors are connected and are otherwise accessible by an external means, such as DC conductors. Dan Lepinski On Fri, 1/31/14, Brian Mehalic wrote: Subject: Re: [RE-wrenches] NEC 2014 690.12 Rapid Shutdown To: &qu

Re: [RE-wrenches] NEC 2014 690.12 Rapid Shutdown

*To:* RE-wrenches > *Cc:* re-wrenches@lists.re-wrenches.org > > *Subject:* Re: [RE-wrenches] NEC 2014 690.12 Rapid Shutdown > > > > It was suggested to me that since 690.12(5) requires the equipment to be > listed and identified, and there is no standard for rapid shutdown &

Re: [RE-wrenches] NEC 2014 690.12 Rapid Shutdown

wrote: From: Drake <<mailto:drake.chamber...@redwoodalliance.org>drake.chamber...@redwoodalliance.org> Subject: Re: [RE-wrenches] NEC 2014 690.12 Rapid Shutdown Date: January 22, 2014 2:16:18 PM CST To: RE-wrenches <<mailto:re-wrenches@lists.re-wrenches.org>re-wrenches@lists.re-wrenches.org

Re: [RE-wrenches] NEC 2014 690.12 Rapid Shutdown

sts.re-wrenches.org wrote: From: Drake <<mailto:drake.chamber...@redwoodalliance.org>drake.chamber...@redwoodalliance.org> Subject: Re: [RE-wrenches] NEC 2014 690.12 Rapid Shutdown Date: January 21, 2014 11:36:15 AM CST To: RE-wrenches <<mailto:re-wrenches@lists.re-wrenches.o

Re: [RE-wrenches] NEC 2014 690.12 Rapid Shutdown

Frye Sent: Tuesday, January 21, 2014 6:03 PM To: RE-wrenches Subject: Re: [RE-wrenches] NEC 2014 690.12 Rapid Shutdown OK. So I will have a high rate of acceptance if it buy an Tyco vacuum relay, and mount it in a Hoffman enclosure, and then put it on my roof? On 1/21/2014 5:45 PM, Bill Brooks

Re: [RE-wrenches] NEC 2014 690.12 Rapid Shutdown

*Sent:* Tuesday, January 21, 2014 2:36 PM *To:* RE-wrenches *Cc:* re-wrenches@lists.re-wrenches.org *Subject:* Re: [RE-wrenches] NEC 2014 690.12 Rapid Shutdown It was suggested to me that since 690.12(5) requires the equipment to be listed and identified, and there is no standard for rapid shutdown

Re: [RE-wrenches] NEC 2014 690.12 Rapid Shutdown

-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Brian Mehalic Sent: Tuesday, January 21, 2014 2:36 PM To: RE-wrenches Cc: re-wrenches@lists.re-wrenches.org Subject: Re: [RE-wrenches] NEC 2014 690.12 Rapid Shutdown It was suggested to me that since

Re: [RE-wrenches] NEC 2014 690.12 Rapid Shutdown

mber...@redwoodalliance.org>> *Subject:**Re: [RE-wrenches] NEC 2014 690.12 Rapid Shutdown* *Date:*January 21, 2014 11:36:15 AM CST *To:*RE-wrenches <mailto:re-wrenches@lists.re-wrenches.org>> *Reply-To:*RE-wrenches <mailto:re-wrenches@lists.re-wrenches.org>> Bill, It is goo

Re: [RE-wrenches] NEC 2014 690.12 Rapid Shutdown

Editor, SolarPro magazine > NABCEP Certified PV Installation Professional > david.brear...@solarprofessional.com > Direct: 541.261.6545 > > > > > >> On Jan 21, 2014, at 1:12 PM, re-wrenches-requ...@lists.re-wrenches.org wrote: >> >> From: Drake >&

Re: [RE-wrenches] NEC 2014 690.12 Rapid Shutdown

AM To: RE-wrenches Subject: Re: [RE-wrenches] NEC 2014 690.12 Rapid Shutdown Wrenches, There is no guidance in the Code text for where the shutdown should take place. (1) says: "Requirements for controlled conductors shall apply only to PV system conductors of more than 1.5m (5') in le

Re: [RE-wrenches] NEC 2014 690.12 Rapid Shutdown

-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Jeffrey Quackenbush Sent: Thursday, January 16, 2014 1:09 AM To: RE-wrenches Subject: Re: [RE-wrenches] NEC 2014 690.12 Rapid Shutdown Wrenches, There is no guidance in the Code text for where the shutdown should

Re: [RE-wrenches] NEC 2014 690.12 Rapid Shutdown

Wrenches, There is no guidance in the Code text for where the shutdown should take place. (1) says: "Requirements for controlled conductors shall apply only to PV system conductors of more than 1.5m (5') in length inside a building, or more than 3m (10') from a PV array." So, the provisions ap

Re: [RE-wrenches] NEC 2014 690.12 Rapid Shutdown

The un-controlled conductor could be up to 15 feet, 10 on the roof and 5 in the building? Mark Frye Berkeley Solar Electric Systems On 1/15/2014 2:02 PM, Daniel Young wrote: Here is a link for a video where Mike Holt helps with an explanation to your question. https://www.youtube.com/watch

Re: [RE-wrenches] NEC 2014 690.12 Rapid Shutdown

Does Midnite’s Birdhouse or any combiner solutions meet the requirement to achieve 30V, 240 kVA within 10 seconds? I’ve never seen a string inverter’s DC input terminals drop that quickly, and I’m especially curious to know how the string inverter manufacturers are going to cope with this, or i

Re: [RE-wrenches] NEC 2014 690.12 Rapid Shutdown

Here is a link for a video where Mike Holt helps with an explanation to your question. https://www.youtube.com/watch?v=sUXShMZJorQ Essentially, the rapid shutdown needs to keep the energized length of conductors to within 10’ of the array if on the roof (this rule is only for arrays on b