The new rule in the Electric Powertrain ( EV2.2.1 ) is not clear about having a complete casing around the motor or if you can have a casing just above the motor.

In case of having a complete casing, is necessary to have the motor's poles inside it or they can be outside ?

''EV2.1.2 Motors must be contained within a structural casing where the thickness is at least 3.0 mm (0.120
inch). The casing must use an Aluminum Alloy of at least 6061-T6 grade or better if a casing
thickness of 3.0mm is used. If lower grade alloys are used then the material must be thicker to
provide an equivalent strength. ''

Thank you for your help.

Victor