17th Edition IET Wiring Regulations: Electric Wiring for by Brian Scaddan

By Brian Scaddan

Synopsis:

This booklet has for a few years been the traditional advisor to the sensible features of family electric wiring. It explains how you can perform paintings properly and properly in a step by step manner.

Essential analyzing for an individual acquiring a family Installer Scheme Qualification which pertains to half P of the construction rules, this name additionally acts as a convenient pocket advisor to most sensible perform for electricians. even if now not meant as a DIY handbook, non-qualified individuals also will locate this e-book beneficial reading.

The how-to-guide for domestic wiring to specialist standards

Essential studying for severe DIY, electric install, plumbing, heating structures, television and protection alarm installation

Up so far with the newest IET Wiring Regulations

Product Description:

This e-book has for a few years been the traditional advisor to the sensible facets of household electric wiring. It explains tips to perform paintings effectively and properly in a step by step demeanour and has been up to date to paintings along the seventeenth variation of the Wiring rules Amendments. crucial studying for somebody acquiring a family Installer Scheme Qualification which pertains to half P of the construction laws, this name additionally acts as a convenient pocket advisor to top perform for electricians. even if no longer meant as a DIY handbook, non-qualified folks also will locate this ebook important interpreting.

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Additional info for 17th Edition IET Wiring Regulations: Electric Wiring for Domestic Installers

Sample text

Cooker units are available with or without socket outlets. If the rating of the circuit is between 15 and 50 A, one radial may feed two or more cooking appliances in the same room. 21 29 Position of cooker control switch. e. an oven and a remote hob). 21). Ring final circuits Generally referred to as ring mains, these are the most common method of supplying BS 1363 socket outlets in domestic installations. The general requirements for these conventional circuits are as follows. 1. 5 m2 mineral-insulated copper conductors (MICCs) and protected by a 30 or 32 A device of any type.

WIRING SYSTEMS AND INSTALLATION METHODS There are two basic wiring systems used in domestic premises: 1. Flat twin and three-core cable (6242 Y and 6243 Y), clipped to the building structure, run in the floor, wall and ceiling voids and, for added protection when wiring is run surface, enclosed in mini-trunking. 2. Single-core cables (6491 X), enclosed in steel or rigid PVC conduit or in skirting and/or architrave trunking. The flat sheathed cables are more likely to be used with the minitrunking systems, which are not usually continuous throughout the whole installation.

But where this is not practicable and such cable installation is in a premises used by unsupervised persons (typically domestic), the cables must be protected by a 30 mA RCD. In order to avoid undue strain on conductors, cables in accessible positions must be supported at set intervals along both horizontal and vertical runs. 3. indd 41 27/05/2015 10:36 42 Domestic Electrical Installations Clearly, these distances are not applicable to sheathed cables, enclosed or capped, if they are embedded in the building material, as they would be supported throughout their entire length.

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