Each place is slighty diffrent so it will varies a bit but really most common is 36 hight and useally from 12 to 18 inch away from the unit unless have multi units then i group the disconnect switch if in line of sight other wise spec ed.
Roof ac disconnect.
An ac disconnect also known as a fuse box or switch box is for controlling the breakers and fuses that lead to your air conditioner.
Ac disconnects act as safety switches that disconnect the load from the power sources.
The air conditioner or heat pump unit disconnect must be within sight from and readily accessible from the unit.
The disconnecting means shall be permitted to be installed on or within the air conditioning or refrigerating equipment.
The disconnecting means must be within sight of the transformer unless the location of the disconnect is field marked on the transformer and the disconnect is lockable click here to see fig.
The hight of the disconnection switch is no higher than the a c unit typically 36 inch up from roof line.
Nec 440 13 disconnect for room air conditioners or heat pumps paraphrasing.
Eaton offers the industry s most complete line of acds.
The disconnecting means shall not be located on panels that are designed to allow access to the air conditioning or refrigeration equipment or to obscure the equipment nameplate s.
The best ac disconnects are outdoor rated provide easy access to the interior and are built to last.
Devices are available in fused non fused molded case switch or three phase designs and in metal or plastic enclosures for all application.