Nope. It's west facing stucco wall without shadow. It's on sun through most of the day. With IR camera i clocked it in range of 65C-75C multiple times (so it's maybe not 170, but 165. hate C<>F conversions in head) . I had inverter on this wall, and it simply died from overheating. Same wall on the inside get's to 30C or more if I don't run AC that blows on it. Wall is triple layer stucco over plywood, R13 fiberglass and then drywall.