Types of enclosures are as follows:-
1)open type enclosure-(it is open from both the ends)
2)protected type enclosure-(not completely open from both the
ends)
3)drip proof type enclosure-(does not allow liquid or moisture
to enter)
4)totally enclosed enclosure-(does not allow foreign particles
to enter)
5)pipe ventilated enclosure-(used for providing ventilation for
motor)
6)flame proof enclosure-(used when motor is to be used in
explosive atmosphere)