Re: [RE-wrenches] Location of DC disconnect vis-a-vis rapid shutdown exemption

Hi Ray, The stand-alone diagram calls out the PV system disconnect right after the PV system DC circuits and prior to the point of common coupling with the batteries and the stand-alone inverter. Yes, you are correct a controller or DC to DC converter is not shown in the this diagram or the

Re: [RE-wrenches] Location of DC disconnect vis-a-vis rapid shutdown exemption

Hi Rebekah; Thanks for pointing out the changes to the diagrams.  I especially appreciate Note (2). /The PV system disconnect in these diagrams separates the PV system from all other systems./ That seems simple enough for defining the boundaries of RSS, until you think about off grid, and

Re: [RE-wrenches] Location of DC disconnect vis-a-vis rapid shutdown exemption

Hi everyone, I strongly recommend looking at the figures that were added in NEC 2017 at the beginning of Article 690 in 690.1(b). What they show is equipment that is part of the PV system (to the left of the PV system disconnect called out in the diagrams), and equipment that is not part of the

Re: [RE-wrenches] Location of DC disconnect vis-a-vis rapid shutdown exemption

For GT using Solar edge or Enphase, its not so hard to comply, but If you are looking at off grid systems, it's not just someone's opinion, its $1,000s of dollars extra to comply with 690.12. It also results in a system that is less reliable, which is less safe off grid where lives depend on

Re: [RE-wrenches] Location of DC disconnect vis-a-vis rapid shutdown exemption

e Sent: Monday, April 16, 2018 12:04 AM To: re-wrenches@lists.re-wrenches.org Subject: Re: [RE-wrenches] Location of DC disconnect vis-a-vis rapid shutdown exemption Thanks Darryl. I guess I can add that I am in CA and so looked only at the 2014. I also looked at the 2017 article. Man, I have

Re: [RE-wrenches] Location of DC disconnect vis-a-vis rapid shutdown exemption

Hey y'all, I'm going to disagree about the NEC getting "worse and worse when it comes to PV," (see disconnect and grounding requirements, for instance!), but as with previous posters, that's just an opinion. Regarding location - the 2014 version had very little to say about the location of any

Re: [RE-wrenches] Location of DC disconnect vis-a-vis rapid shutdown exemption

Thanks Darryl. I guess I can add that I am in CA and so looked only at the 2014. I also looked at the 2017 article. Man, I have to say, my impression remains that really starting with 2008 the code has just gotten worse and worse when it comes to PV, but that is just me. Not really sure

Re: [RE-wrenches] Location of DC disconnect vis-a-vis rapid shutdown exemption

I think the code says Outside readily accessible, On Sun, Apr 15, 2018 at 12:22 PM, Mark Frye wrote: > Folks, > > As I recall, an inverter and it's integrated DC disconnect need only be > placed in an accessible location. I am thinking of putting an inverter high > up