Irrigation machines, by definition, contain at least one motor [675.2] and thus are special case motor applications. This means Art. 430 applies, except as modified by Art. 675.
Because they operate outdoors, these machines have requirements you don’t see for typical industrial equipment, such as presses and robotic welders. For example, the external plugs and connectors must be of the weatherproof type [675.17].
These machines may be in direct contact with the soil (Pho