[RE-wrenches] Rapid Shutdown for Ground Mounted Multimode (Battery) Inverters

[Ray]

This has been discussed to death in previous Wrench strings. Just to cut 
to the chase:

please review NEC 2017, Figure 690.1(b) Note:(2). /The PV system 
disconnect in these diagrams separates the PV system from all other 
systems.//
/

The inverter, charge controller, batteries etc are no longer part of 
article 690, and are not subject to its requirements.  Look at articles 
705, 706, and 480 for guidance for those _/other systems/_.
//

/Ray Walters/
Remote Solar
303 505-8760

On 2/13/20 12:55 PM, Dave Angelini Offgrid Solar wrote:
> Hi Chris,
>
> A few times and my back-up with a schneider system is their rapid
> shutdown. In the end the inspector comes around and realizes there is
> little gain for an offgrid ground mounted array for fireman. You do have to
> educate them and if they are insistent on being a bonehead, install the RS
> for the inspection and then use the box for the next one or sell it.
>
>   After almost 30 years offgrid the last thing I want is something that can
> fault out the solar or worse when I am away. Networks can be the enemy at
> times. Less is more offgrid in my opinion.
>
>
> Dave Angelini Offgrid Solar
> "we go where powerlines don't"
> http://members.sti.net/offgridsolar/
> e-mail offgridsolar at sti.net
> text 209 813 0060
>
> On Thu, 13 Feb 2020 13:07:53 -0500, Christopher Warfel
> <cwarfel at entech-engineering.com> wrote:
>> I got involved in a long discussion on Rapid Shutdown compliance for
>> battery multimode, grid interconnect inverters that have a ground
>> mounted array.  At one point, ground mounted array was not supposed to
>> be subject to Rapid Shutdown unless there were dc conductors on the
>> building.  NEC 2017 seems to say it is if conductors are 3' in or on
>> buildings.  The intent of Rapid Shutdown was supposed to protect fire
>> fighters from exposure to high dc voltage when the array was on a roof.
>> Every code cycle it morphs into something a little different.  Has
>> anyone had to confront this situation, and was this type of project
>> subject to Rapid Shutdown?  Thanks in advance for any clarity on this.
>> Chris
>>
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