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NFPA 70, Article 690.31

Question asked by tasha_mccarter on Feb 17, 2020
Latest reply on Feb 19, 2020 by tasha_mccarter

I need assistance with interpretation of the following article.  My contractor is using the following Code exception to omit labeling on PV string wires.  Their logic is that each string wire is is pre-fabricated to specific lengths and thus meets the spacing and arrangement exception.  Who on the code making panel or who know an independent engineer that can provide their interpretation on this issue?

 

Wording from 2017 NEC Article 690.31

 

(B) Identification and Grouping. PV source circuits and PV output circuits shall not be contained in the same raceway, cable tray, cable, outlet box, junction box, or similar fitting as conductors,  feeders, branch circuits of other non-PV systems, or inverter output circuits, unless the  conductors of the different systems are separated by a partition. PV system circuit conductors  shall be identified and grouped as required by 690.31(B)(1) through (2). The means of  identification shall be permitted by separate color coding, marking tape, tagging, or other  approved means.

 

(1) Identification. PV system circuit conductors shall be identified at all accessible points  of termination, connection, and splices. The means of identification shall be permitted by separate color coding, marking tape, tagging, or other approved means. Only solidly  grounded PV system circuit conductors, in accordance with 690.41(A)(5), shall be  marked in accordance with 200.6.

 

Exception: Where the identification of the conductors is evident by spacing or arrangement,  further identification shall not be required.

 

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