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17th Edition Part 524 To 529
- 9. Table 52.3 – Minimum cross-sectional area of conductors Cross-sectional area mm 2 Material 0.75 Extra-low voltage circuits for special appliances 0.75 a For other appliances As specified in the product standard Copper For specific appliance Flexible connections with non sheathed and sheathed cables 4 Copper Signalling and control circuits 1.0 16 Copper Aluminium Power circuits Bare conductors 0.5 (see note 1 in BS 7671) Copper Signalling and control circuits 1.0 16 Copper Aluminium Power and lighting circuits Non sheathed and sheathed cables Conductor Use of the circuit Type of wiring system I have doubts about this
Editor's Notes
- Refer to Appendix 4. Use of Appendix 4 will covered in more detail in Section 523/525. For now it is worth getting students used to finding installation methods and their related reference method.
- Refer to Appendix 4. Use of Appendix 4 will covered in more detail in Section 523/525. For now it is worth getting students used to finding installation methods and their related reference method.
- Refer to Appendix 4. Use of Appendix 4 will covered in more detail in Section 523/525. For now it is worth getting students used to finding installation methods and their related reference method.
- The following slides illustrate busbar and powertrack systems. Bs 7671 does not contain any specific detailed requirements (apart from using the correct British Standards). However Appendix 8 should be quickly referred to. Generally manufacturers information/recommendation should be followed.
- Such systems (often overhead) are also used to supply machinery, providing flexibility when the connected equipment may require frequent movement.