By Eur Ing Geoffrey Stokes(auth.)
This publication offers a radical, functional advisor to the Wiring laws BS 7671 : 2001. It gains particularly:
? labored layout examples
? huge tabular fabric and checklists
? various illustrations
? specific realization to the themes of inspection, trying out, verification, certification and reporting
? NICEIC specimen certificate and different forms
? suggestions on specialized installations
The 3rd version has been up to date to take account of the 2001 amendments to the Wiring laws, together with revisions on:
- safeguard opposed to overcurrent
- isolation and switching
- zoning specifications for destinations containing a tub or shower
- building web site installations
- street strength provides and road furnishings and kit
Chapter 1 Plan and Terminology of BS 7671:2001 and assisting ebook (pages 1–4):
Chapter 2 electrical energy, the legislation, criteria and Codes of perform (pages 5–11):
Chapter three Scope, item and basic rules (pages 12–23):
Chapter four evaluation of basic features (pages 24–42):
Chapter five security opposed to electrical surprise (pages 43–87):
Chapter 6 safety opposed to Thermal results (pages 88–98):
Chapter 7 defense opposed to Overcurrent, Undervoltage and Overvoltage (pages 99–136):
Chapter eight Isolation and Switching (pages 137–159):
Chapter nine gear choice ? universal principles (pages 160–173):
Chapter 10 Wiring structures (pages 174–238):
Chapter eleven Switchgear, protecting units and different apparatus (pages 239–278):
Chapter 12 protecting Conductors, Earthing and Equipotential Bonding (pages 279–311):
Chapter thirteen specialized Installations (pages 312–332):
Chapter 14 offers for security prone (pages 333–338):
Chapter 15 The Smaller set up (pages 339–367):
Chapter sixteen particular Installations and destinations (pages 368–417):
Chapter 17 Inspection, checking out, Certification and Reporting (pages 418–494):
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Extra resources for A Practical Guide to the Wiring Regulations, Third Edition
Section 131 ± Design Section 132 ± Selection of electrical equipment Section 133 ± Erection, verification and periodic inspection and testing of electrical installations. The first section (Regulation 131±01±01) deals with provisions for which the installation has been designed, in terms of protecting persons and livestock, and property. For the first time, there is provision for the proper functioning of the installation for the intended use. Regulation 131±02±01 addresses the supply characteristics in terms of current, nominal voltage and earthing arrangements, together with calling for the supplier's requirements to be determined.
6 Motors ± loading and diversity Diversity for motor circuits will depend on the type of premises and in Table H2 of the IEE Guidance Note Selection and erection these are given as: . commercial premises ± shops, offices, stores and other business premises: 100% of first and second largest motor plus 80% of second largest motor plus 60% of remainder; commercial premises ± guest houses, small hotels, boarding houses: 100% of first and second largest motor plus 50% of remainder. 8 power factor) are fed from a common distribution board.
An example of this would be a Protective Multiple Earthing (PME) supply on which the neutral is effectively earthed to the star point of the source and via suitable earth electrodes at a number of points along the length of the supply cable. 4, the source is earthed through a low impedance earth electrode system effectively `tying' one pole to Earth in a single-phase system and the star point of a three-phase system (on a public supply this impedance does not generally exceed 20 O). The function of neutral conductor in the distribution supply cables up to the consumer's terminals is quite separate from the protective function.
A Practical Guide to the Wiring Regulations, Third Edition by Eur Ing Geoffrey Stokes(auth.)