HVAC wiring

I’m pretty sure that a/c disconnect wiring must be stranded type not solid. I this the case?

Also, is stranded wire for a 40 amp furnace ok?

Wrong. No. Yes.


haha thank you sir!

Conductors #8 AWG and larger in raceways are required to be stranded.

ohh! so if the a/c label calls for a size 8 AWG and a max breaker of 45amp, that wiring in the disconnect must be stranded. Thanks!

From the 2011 NEC: