NICEIC Snags & Solutions 1 Earthing & Bonding 18th Edition 2018 (PDF)

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About

Place of Publication: United Kingdom;
Pages: 124
Size: 56 Mb
Publisher: NICEIC-ELECSA-ECA
Author: NICEIC-ELECSA-ECA
Language: English
Published: December 2018

This 'snags and solutions' book provides guidance for those electrical contractors carrying out earthing and bonding as part of their electrical installation work. It does this by addressing a series of typical problem areas and misconceptions that the electrician routinely comes across.

Earthing and bonding is an integral part of the widely used protective measure of automatic disconnection of supply (ADS) - previously called earthed equipotential bonding and automatic disconnection of supply (EEBADS). A fundamental purpose of ADS is to limit the magnitude and duration of the voltage between exposed conductive-parts of a circuit and other exposed-conductive or extraneous-conductive parts so as to prevent danger.

One part of ADS is fault protection which is provided by protective earthing, protective equipotential bonding and automatic disconnection in case of a fault, in accordance with Regulations 411.3 to 6.

This handy pocket-sized book contains 45 snags and solutions detailing such issues as main equipotential bonding, supplementary bonding and instances where there may be inadequate means of earthing. Every snag and corresponding solution is dearly illustrated and includes reference to the relevant regulatory requirement of BS 7677: 2018 where applicable.

Content

Introduction and Glossary
SNAG 1 DIFFERENCE BETWEEN EARTHING and BONDING
SNAG 2 ELECTRICAL SYSTEMS and EARTHING ARRANGEMENTS
SNAG 3 MEANS of EARTHING in OLDER INSTALLATIONS
SNAG 4 SIZING the CSA of the EARTHING CONDUCTOR
SNAG 5 MEANS Of DISCONNECTION of the EARTHING CONDUCTOR
SNAG 6 LABELLING of the EARTHING CONDUCTOR
SNAG 7 PROTECTION of the EARTHING CONDUCTORS
SNAG 8 EARTHING CLAMPS NOT to be USED on CABLES
SNAG 9 USE of BONDING CLAMPS to BS 951
SNAG 10 Zs VALUES for TT SYSTEMS
SNAG 11 MAIN EQUIPOTENTIAL BONDING NOT PROVIDED
SNAG 12 LIGHTNING PROTECTION SYSTEMS
SNAG 13 BONDING to GAS PIPEWORK
SNAG 14 MAIN EQUIPOTENTIAL BONDING in a BLOCK of FLATS
SNAG 15 RE-EMERGING METALLIC PIPEWORK
SNAG 16 EARTH CONTINUIW for METALLIC WIRING SYSTEMS
SNAG 17 METAL LIDS OF FLOOR BOXES
SNAG 18 ELECTRIC TOWEL RAILS
SNAG 19 EARTHING of METAL BACK BOXES
SNAG 20 UNUSED CORES Of MULTICORE CABLES
SNAG 21 UNEARTHED SECTIONS of CONDUIT
SNAG 22 ARMOUR MUST BE EARTHED
SNAG 23 PROTECTIVE CONDUCTOR RUN to an ACCESSORY BUT NOT TERMINATED
SNAG 24 METAL SUSPENDED CEILINGS
SNAG 25 SUPPLEMENTARY BONDING Of METAL SINKS
SNAG 26 ST EL CONDUIT SYSTEMS
SNAG 27 NON-METALLIC ENCLOSURE
SNAG 28 MAIN and SUPPLEMENTARY BONDING
SNAG 29 IDENTIFICATION Of PROTECTIVE CONDUCTORS
SNAG 30 SUPPLEMENTARY BONDING CONDUCTORS
SNAG 31 LIGHTING CIRCUITS
SNAG 32 MAIN EARTH TERMINAL
SNAG 33 EARTHING and ELECTRICAL INSTALLATION
SNAG 34 STRUCTURAL STEELWORK as a CPC
SNAG 35 ALTERATIONS and ADDITIONS
SNAG 36 EQUIPMENT CONNECTED by a SOCKET-OUTLET
SNAG 37 LOOPED MAIN PROTECTIVE BONDING CONDUCTORS
SNAG 38 LOCATIONS CONTAINING a BATH or SHOWER
SNAG 39 SUPPORT of BONDING CONDUCTORS
SNAG 40 MAIN EQUIPOTENTIAL BONDING MORE THAN ONE BUILDING
SNAG 41 BONDING of METALLIC PIPEWORK
SNAG 42 EXTRANEOUS-CONDUCTIVE-PARTS
SNAG 43 STRUCTURAL STEEL as a MEANS of EARTHING
SNAG 44 ELECTRIC SHOCK RISK WHERE the SUPPLY is PME
SNAG 45 FUNCTIONAL EARTH CONNECTIONS in a CONSUMER UNIT (WHERE the SUPPLY is PME)

Tags: NICEIC Snags & Solutions 1, NICEIC Guide, Earthing & Bonding