BEAMA Guides | 18th Edition
A collection of the latest guides relating to 18th Edition, Hager is proud to be a technical contributor to these guides which provide technical advice on a range of 18th Edition related topics.
BEAMA Guide to Arc Fault Detection Devices (AFDD's)
Arc Fault Detection Devices represents a new category of additional protection against fire caused by arc faults in AC final circuits. BS 7671: 2018 IET Wiring Regulations 18th Edition recommends the use of AFDDs for certain applications. This BEAMA guide provides detailed technical information and application guidance for AFDDs in electrical installations.
Beama Guide To Surge Protection Devices (SPD's) - Selection, Application & Theory
This Guide is intended as a practical guide for designers, specifiers and installers to enable them to comply with surge protection requirements in BS 7671: 2018 IET Wiring Regulations 18th Edition.
BEAMA RCD Handbook - Guide To The Selection & Application Of RCD's
The RCD Handbook: BEAMA Guide to the selection and application of Residual Current Devices (RCDs)
This Guide provides specifiers, installers and end users, clear guidance on the selection and application of the wide range of RCDs now available. It details the specific applications of Types AC, A, F and B RCDs which are now recognised in BS 7671: 2018 IET Wiring Regulations 18th Edition. Guidance is also given on the installation and maintenance of RCDs, including many of the installation conditions that cause ‘unwanted tripping’
BEAMA Technical Bulletin RCD Selection 2017-11
BEAMA publishes a Technical Bulletin to aid specifiers, installers and end users in selecting appropriate residual current protection for specific applications. The Bulletin addresses the selection and application of Types AC, A, F and B Residual Current Devices (RCDs).
BEAMA Technical Bulletin - Overload Protection of an RCCB or Switch
Technical Bulletin: Coordination of wiring accessories, low voltage switchgear and controlgear assemblies with conductors operating at a temperature exceeding 70 °C e.g. XLPE.
This bulletin provides guidance on Regulation 512.1.5 of BS 7671: 2018 IET Wiring Regulations 18th Edition.
More from the 18th Edition
Arc Fault Detection Devices
Arc fault protection devices (AFDD) use microprocessors to identify characteristic current flow and voltage curves that indicate an arc fault and automatically trip the affected circuit.
Selection of RCD Types
RCD's exist in various different forms and react differently depending on the presence of DC components or different frequencies.
Devices such as switches, RCCBs etc. in distribution boards and consumer units may have historically had their rated current determined after having taken diversity into account but without having considered overload protection of the devices.
A transient overvoltage or surge is a short duration increase in voltage measured between two or more conductors. In short this means anything from microseconds (millionths of a second) to a few milliseconds (thousandths of a second) in duration.