The conduits in question are a 2 1/2inch with 4-500MCM feeding a rooftop air unit and a 3/4inch with 4-#12 feeding an exhaust fan.
Dennis E.
Why would a rooftop unit of that size require a neutral? Seems odd to me, units of that size should have integral control power transformers. Though I guess there could be 277V motors in it, seems unlikely.
