main breaker and unit breaker/switch questions

[toocoolforschool]

You guys are awesome.

[mark beiser]

AND the unit must have the correct power distribution parts, as shown above, AND the unit disconnect MUST be within sight of the unit. This is NOT the breakers in the unit.

Actually, if the unit has integral breakers, like the air handler I pictured, they count as the means of disconnect, so you don't need another disconnect within sight.

[timebuilder]

Actually, if the unit has integral breakers, like the air handler I pictured, they count as the means of disconnect, so you don't need another disconnect within sight.

You are correct. The stipulation in 422.19 (A) is intended to cover fuses used as supplementary overcurrent protection. I used to see a lot of units with fuses. My bad.