[RE-wrenches] Getting ready for 2014 NEC rapid shut down with string inverters

[frenergy]

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
>>
>>
>> august at luminalt.com _______________________________________________