ERROR

我们很抱歉 - 尽管我们做到了最好:发生了错误
Typedatabase
MessageYou have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near "AND SUBSTRING(categories_id,4,1) != "0") AS cat4, (SELECT categorie..." at line 5
QuerySELECT (SELECT categories_id FROM categories_description WHERE language_id = 13 AND categories_id = 000) AS cat1, (SELECT categories_id FROM categories_description WHERE language_id = 13 AND categories_id = 00 AND SUBSTRING(categories_id,2,1) != "0") AS cat2, (SELECT categories_id FROM categories_description WHERE language_id = 13 AND categories_id = 0 AND SUBSTRING(categories_id,3,1) != "0") AS cat3, (SELECT categories_id FROM categories_description WHERE language_id = 13 AND categories_id = AND SUBSTRING(categories_id,4,1) != "0") AS cat4, (SELECT categories_name FROM categories_description WHERE language_id = 13 AND categories_id = 000) AS cat1name, (SELECT categories_name FROM categories_description WHERE language_id = 13 AND categories_id = 00 AND SUBSTRING(categories_id,2,1) != "0") AS cat2name, (SELECT categories_name FROM categories_description WHERE language_id = 13 AND categories_id = 0 AND SUBSTRING(categories_id,3,1) != "0") AS cat3name, (SELECT categories_name FROM categories_description WHERE language_id = 13 AND categories_id = AND SUBSTRING(categories_id,4,1) != "0") AS cat4name, (SELECT url_text FROM commerce_seo_url_without_language WHERE categories_id = 000) AS cat1url, (SELECT url_text FROM commerce_seo_url_without_language WHERE categories_id = 00 AND SUBSTRING(categories_id,2,1) != "0") AS cat2url, (SELECT url_text FROM commerce_seo_url_without_language WHERE categories_id = 0 AND SUBSTRING(categories_id,3,1) != "0") AS cat3url, (SELECT url_text FROM commerce_seo_url_without_language WHERE categories_id = AND SUBSTRING(categories_id,4,1) != "0") AS cat4url, (SELECT wod_count_products FROM categories WHERE categories_id = 000) AS cat1cnt, (SELECT wod_count_products FROM categories WHERE categories_id = 00 AND SUBSTRING(categories_id,2,1) != "0") AS cat2cnt, (SELECT wod_count_products FROM categories WHERE categories_id = 0 AND SUBSTRING(categories_id,3,1) != "0") AS cat3cnt, (SELECT wod_count_products FROM categories WHERE categories_id = AND SUBSTRING(categories_id,4,1) != "0") AS cat4cnt

John Bradley & Geoffrey Stokes 
A Practical Guide to The Wiring Regulations [PDF ebook] 
17th Edition IEE Wiring Regulations (BS 7671:2008), 4th Edition

Support

This best-selling text has been revised to reflect the
requirements of the 17th Edition of the IEEWiring
Regulations (BS 7671: 2008).
It includes essential information on the new rules applied to
special installations or locations, such as bathrooms, swimming
pool locations, camping/caravan sites, marinas, exhibition and show
locations, solar photovoltaic power supply systems, and floor and
ceiling heating systems, amongst others. It presents clear
explanations on inspection, testing, certification and reporting,
test instruments and test methods, as well as covering:
* electricity, the law, standards and codes of practice;
* assessment of general characteristics;
* protection against electric shock, thermal effects,
overcurrent, undervoltage and overvoltage;
* isolation and switching;
* the common rules of equipment selection;
* switchgear, protective devices and other equipment;
* wiring systems (including the external influences on them and
cable installation methods);
* protective conductors, earthing and protective bonding;
* supplies for safety services;
* the smaller installation, and;
* specialised installations, such as outdoor lighting,
installations in churches, multi-occupancy blocks of flats.
These topics are addressed with pertinent regulation numbers,
and a useful appendix lists the relevant Standards. Background
guidance and worked examples are provided where appropriate.
Like the earlier editions of this text, this new edition will be
a useful aid for designers, installers and verifiers of electrical
installations, students of the industry wishing to gain better
understanding of the many facets of electrical safety, and
‘duty holders’ as defined by the Electricity at Work
Regulations 1989.

€72.99
payment methods

About the author

Eur Ing Geoffrey Stokes CEng FIEE FCIBSE was Principal
Engineer at the National Inspection Council for Electrical
Installation Contracting, and is now a consultant.
Eur Ing John T Bradley BSc CEng MIET FCIBSE is Principal
Engineer at the Electrical Safety Council.

Buy this ebook and get 1 more FREE!
Language English ● Format PDF ● Pages 616 ● ISBN 9780470742853 ● File size 12.5 MB ● Publisher John Wiley & Sons ● Published 2009 ● Edition 4 ● Downloadable 24 months ● Currency EUR ● ID 2323538 ● Copy protection Adobe DRM
Requires a DRM capable ebook reader

More ebooks from the same author(s) / Editor

19,094 Ebooks in this category