[RE-wrenches] Tell me what I'm missing on 690.12 B(2)? Where does it say "module-level???"

[Howard Arey]

The wording in 690.12 B(2) , effective after Jan 1, 2019, says "The PV
System shall comply with one of the following:" 

In none of the three subsequent paragraphs does it ref to "module level
shutdown." Paragraph 2 says gets inside the array voltage under 80 volts
within 30 seconds so I understand how that does not make a great article
headline.hence "module-level."

But I had a distributor that says they do not stock Fronius any longer
because it does not have a NEC 2017 solution.

But doesn't paragraph 1 ("comply with one of the following") and its
informational note provide a path to compliance as long as the string-level
RSD device is mounted within 1-foot of the array boundary?

How did "module-level" shutdown get taken as gospel truth??

I'm thinking a Fronius Primo with its RSD Quattro device mounted on an array
rail meets current 2017 code.

 

Howard "Scot" Arey

254-300-1228

scot.arey at solarcentex.com <mailto:scot.arey at solarcentex.com> 

 



 

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