Wrenches,<div><br></div><div>We have a string of batteries being inspected by a local AHJ. In plan-check comments, I was asked to ensure that the flexible cable was UL-listed, so we made sure of this when it came from the suppliers. We used 4/0 RHW-2. Now our inspector is asking if "RHW-2 is fine-stranded in Article 400 of the NEC as required by 690.74?"</div>
<div><br></div><div>Article 400 doesn't explicitly define any cable types for use in battery systems, and the one general disclaimer is in 400.4: "Types of flexible cords and flexible cables other than those listed in the table shall be the subject of special investigation".</div>
<div><br></div><div>Has anyone had a similar request before? Anyone done a "special investigation" on cables, and have results to share? Any other thoughts?</div><div><br></div><div>Thanks for any help,</div><div>
<br></div><div>-Phil</div><div>Real Goods Solar</div>