Basic Electrical Installation Work

| Kategorie: Kniha  |

Strana 280 z 399

Jak získat tento dokument?






Poznámky redaktora
Protected against harmful ingress of water when immersed to depth between 150mm and 1m.Statutory regulations and codes practice 269 Where degree protection not specified, the number replaced by an ‘X’ which simply means that the degree protection not specified although some protection may afforded. Protected against submersion. Protected against water splashing from any direction.3. Prevents ingress of dust sufficient to cause harm. Protected against a solid object greater than 1.5mm FIGURE 13.3 Index protection codes. Protected against jets water from any direction. No dust ingress. Protected against a solid object greater than 50mm, such as a hand. Protected against water dripping vertically, such as condensation. Non-protected. The ‘X’ used instead ‘0’ since ‘0’ would indicate that protection was given. Suitable for continuous immersion water. Prevents ingress sufficient to cause harm. Protected against dripping water when tilted 15°. Protected against water spraying an angle 60°. Protected against a solid object greater than 2.5mm, such as a tool wire. Protected against heavy seas powerful jets water. Protected against a solid object greater than 12mm, such as a finger. Dust tight. 13. . 0 0 1 2 3 4 5 6 1 2 3 4 5 6 7 8 1 METRE 2. The index protec- tion codes shown Fig.0mm, such as thin wire strips. Dust protected. First number (DEGREE PROTECTION AGAINST SOLID OBJECT PENETRATION) Second number (DEGREE PROTECTION AGAINST WATER PENETRATION) Non-protected