Special Occupancies

1.   Gas explosion-proof equipment is always approved in a class II location.
(a) True
(b) False

2.   In Class II Div. 1, EMT conduit is permitted if used with a sealing fitting.
(a) True
(b) False

3.  It is permissible to use multiwire circuits in Class II Div. 1 locations.
(a) True
(b) False

5.  TEFC motors are approved for Class III Div. 1 and Div. 2.
(a) True
(b) False

6.  In a class II div. 2 location, luminaires shall be dust-tight or identified for the location.
(a) True
(b) False

Answers:
1.  (b) Not unless identified for the Class II location, Ref: 502.5  
2.  (b) Not permitted, Ref: 502.10(A)  
3.  (a) Deleted previous requirement  
4.  (a) Ref: 503.10(A)(5)  
5.  (a) Ref: 503.125
6.  (a) Ref: 501.130(B)(2)