Basic Electrical Installation Work

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3.3 Index protection codes. The index protec- tion codes shown Fig. Prevents ingress of dust sufficient to cause harm.0mm, such as thin wire strips. Protected against submersion. First number (DEGREE PROTECTION AGAINST SOLID OBJECT PENETRATION) Second number (DEGREE PROTECTION AGAINST WATER PENETRATION) Non-protected.5mm, such as a tool wire. Protected against jets water from any direction. Non-protected. Prevents ingress sufficient to cause harm. Dust protected. Protected against water spraying an angle 60°. 13. . 0 0 1 2 3 4 5 6 1 2 3 4 5 6 7 8 1 METRE 2. Protected against a solid object greater than 2. Protected against heavy seas powerful jets water.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.5mm FIGURE 13. Protected against harmful ingress of water when immersed to depth between 150mm and 1m. Protected against a solid object greater than 50mm, such as a hand. Protected against a solid object greater than 12mm, such as a finger. Suitable for continuous immersion water. The ‘X’ used instead ‘0’ since ‘0’ would indicate that protection was given. Protected against dripping water when tilted 15°. No dust ingress. Protected against water dripping vertically, such as condensation. Protected against water splashing from any direction. Dust tight. Protected against a solid object greater than 1