SURGE & CIRCUIT PROTECTION FEATURE     18th Edition for


overvoltage protection R


S Components, the trading brand of Electrocomponents, has stock availability of the 18th Edition of the IET Wiring


Regulations – Requirements for Electrical Installations – co- published by the IET (Institution of Engineering and Technology) and BSI (British Standards Institution). Significant changes in the 18th


Edition Regulations include a new recommendation for arc fault detection devices (AFDDs) and a revised section on requirements for protection against overvoltage. The first will introduce new regulation that recommends the installation of AFDDs to mitigate the risk of fire in AC final circuits of a fixed installation due to the effects of arc fault currents. The second is a completely revised section that focuses primarily on the requirements for the selection and implementation of surge protection devices to protect against transient overvoltage. The most significant technical change in this area refers to the selection requirements for the voltage protection level. Other key changes in the regulations include: new requirements around residual current devices (RCDs); an extension of the scope of Section 753 to also apply to the area of embedded heating systems; significant changes to a section on electric vehicle (EV) charging installations; an entirely new section concerning onshore installations dedicated to the supply of inland navigation vessels; and the addition of a new appendix that focuses on energy efficiency design. This latest edition of the Regulations, which comes into effect from


It is essential that all electrical professionals


ensure that they are up to speed with the new requirements"


January 2019, is a key publication for all professionals involved in the design, installation or maintenance of electrical wiring in buildings, and should be essential reading for electricians, electrical contractors and maintenance technicians, as well as being of significant interest to academic institutions. Mark Coles, head of technical regulations at the IET, comments: “The


18th Edition of the IET Wiring Regulations contains some significant changes to the way all electrical professionals are required to carry out their work to safeguard themselves and the public. With this in mind, it is essential that all electrical professionals ensure that they are up to speed with the new requirements.” “Supporting


professionals involved in electrical work is an important part of our business,” adds Rashdeep Kelf, senior product manager at RS. The 18th Edition of the IET Wiring Regulations is now available from stock via the RS website.


RS Components rs-online.com  ELECTRICAL ENGINEERING | NOVEMBER 2018 39


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44  |  Page 45  |  Page 46  |  Page 47  |  Page 48  |  Page 49  |  Page 50  |  Page 51  |  Page 52  |  Page 53  |  Page 54  |  Page 55  |  Page 56  |  Page 57  |  Page 58  |  Page 59  |  Page 60  |  Page 61  |  Page 62