16th edition IEE wiring regulations : explained and by Brian Scaddan

By Brian Scaddan

This new version brings this useful booklet into line with the sixteenth version of the IEE Wiring laws which used to be released in may perhaps 1991. Brian Scaddan is the writer of "Wiring platforms and Fault discovering for deploy Electricians".

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Additional info for 16th edition IEE wiring regulations : explained and illustrated

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However, once again the part most likely to be touched is the sliding section, to which it is not possible to bond. In any case there would need to be another simultaneously accessible part to warrant considering any bonding. 44 Earthing 4 Q: What about bonding in bathrooms? A: Bathrooms are particularly hazardous areas with regard to shock risk, as body resistance is drastically reduced when wet. Hence, supplementary bonding between exposed conductive parts must be carried out in addition to their existing CPCs.

5 mm diameter), and a jointed test finger, known affectionately as the British Standard finger! IPXXB denotes protection against the test finger only, and IP4X indicates protection against small foreign bodies and a 1 mm diameter test wire. IEE Regulations 522–01 to 12 give details of the types of equipment, cables, enclosure etc. g an enclosure housing equipment in an AD8 environment (under water) would need to be to IPX8. 54 Protection Protection against electric shock (IEE Regs Chapter 41 and Section 471) There are two ways of receiving an electric shock: by direct contact, and by indirect contact.

E. 150 mA. Protection against indirect contact (IEE Regs Section 413 and Regs 471–08 to 12) The IEE Regulations suggest five ways of protecting against indirect contact. One of these, earthed equipotential bonding and automatic disconnection of supply, has already been discussed in Chapter 2. The other methods are as follows. Use of class 2 equipment Often referred to as double-insulated equipment, this is typical of modern appliances where there is no provision for the connection of a CPC. This does not mean that there should be no exposed conductive parts and that the casing of equipment should be of an insulating material; it simply indicates that live parts are so well insulated that faults from live to conductive parts cannot occur.

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