Page 244 - Electrical Installation in Hazardous Area

208 Electrical installations in hazardous areas

15 BS 4168 (1981) Hexagon Socket Screws and Wrench Keys - metric
Sizes. (IS0 4027 (1977)) Part 3. Specifications for
Hexagon Socket Set Screws with Cone Point.
16 BS 4168 (1981) Hexagon Socket Screws and Wrench Keys - Metric
Sizes (IS0 4028 (1977)) Part 4. Specification for
Hexagon Socket Set Screws with Dog Point.
17 BS 4168 (1981) Hexagon Socket Screws and Wrench Keys - Metric
Sizes. (IS0 4029 (1977)) Part 5. Specification for
Hexagon Socket Set Screws with Cup Point.
18 BS 4500 (1990) IS0 Limits and Fits. (IS0 286-2 (1988)) Part 1.
General tolerances and Deviations. Section 1.2,1990
Tables of Commonly Used Tolerances and Grades
and Limit Deviations for Holes and Shafts.
19. BS 4999 (1988) General Requirements for Rotating Electrical
Machines. Part 105 Classification of Degrees of
Protection Provided by Enclosures for Rotating
Machines.