NABCEP PV Installer Resource Guide Forum

NABCEP PV Installer Resource Guide Feedback Board => Section 2: Verify System Design => Topic started by: Victor on April 02, 2014, 08:41:13 AM

Title: 2.72 Calculate Required Ampacity of Conductors, THWN in PV Source Circuit
Post by: Victor on April 02, 2014, 08:41:13 AM
Why does the example use THWN for the rooftop source circuit in conduit?  I thought THWN was more appropriate for circuits in conduit after leaving the roof and USE-2 was more appropriate for source circuits on the roof.  Also, due to high temperatures on rooftop, wouldn't USE-2 be more appropriate?