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Download e-book for kindle: A Practical Guide to the Wiring Regulations by Geoffrey Stokes

By Geoffrey Stokes

ISBN-10: 0632058986

ISBN-13: 9780632058983

This booklet presents an intensive, functional consultant to the Wiring rules BS 7671 : 2001. It gains in particular:

- worked layout examples

- extensive tabular fabric and checklists

- numerous illustrations

- particular realization to the topics of inspection, checking out, verification, certification and reporting

- NICEIC specimen certificate and different forms

- guidance 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:

- protection opposed to overcurrent

- isolation and switching

- zoning necessities for destinations containing a bathtub or shower

- construction website installations

- highway strength offers and road furnishings and gear

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Additional info for A Practical Guide to the Wiring Regulations

Example text

The Construction (Design and Management) Regulations 1994. Generally applicable. Applies to agricultural and horticultural installations. Specific requirements relating to starting and stopping rotating and other machines. Applies to all installations where such substances are used. See HSE Guidance Note HS(G)41 for guidance on petrol filling stations. Applies to all installations where such substances are used. Under this legislation, Local Authorities are empowered to grant licences for premises where such substances are stored.

1 General The contents of this chapter in BS 7671: 2001 have been reduced from five Regulation Groups to two, the existing requirements having been transferred elsewhere in Part 1. 4 summarizes the changes. 4: Regulation revision BS 7671: 1992 (as amended) BS 7671: 2001 120±01 General 120±01 General 120±02 Relationship with Statutory Regulations 120±02 New materials and inventions 120±03 Installations in premises subject to licensing Transferred to Regulation 110±05 120±04 Use of established materials, equipment and methods Requirements appear elsewhere in BS 7671 120±05 New materials and inventions Transferred to Regulation 120±02±01 Regulation 120±01±01 now states: This Standard contains the rules for the design and erection of electrical installations so as to provide for safety and proper functioning for the intended use.

The measurement taken between phase and neutral at the origin will give the phase-neutral (P-N) short-circuit current and that between phase and the main earthing facility will give the earth fault current. Similarly, phase-phase (P-P) and three-phase prospective fault currents can be obtained in a comparable way. It must be remembered that the values so obtained relate to the particular time at which the tests were undertaken and that allowance should be made for any increase likely to occur due to modifications of the supply network, which should always be regarded as dynamic ± this is particularly important when the supply is derived from the public network.

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A Practical Guide to the Wiring Regulations by Geoffrey Stokes

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