Rooftop HVAC Wire Size

[paul]

The nameplate says 37A minimum circuit ampacity. Do I use the 75° or can I use the 90° column?

Thanks!

 

[infinity]

75° C unless you're applying a correction factor. If not #8 THWN is the minimum size required.

 

[paul]

75° C unless you're applying a correction factor. If not #8 THWN is the minimum size required.

That's what I'm looking for.

Thanks!