Transcription of IET Wiring regulations BS 7671 18th edition
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IET Wiring regulations BS 7671 18th edition
Transient overvoltage protection IET Wiring regulations BS 7671 18th edition4 IET Wiring regulations BS 7671 18th edition The IET Wiring regulations require all new electrical system designs and installations, as well as alterations and additions to existing installations, to be assessed against transient overvoltage risk and, where necessary, protected using appropriate surge protection measures (in the form of Surge Protection Devices SPDs).3 TRANSIENT OVERVOLTAGE PROTECTION - INTRODUCTION Transient overvoltage protectionIntroductionBased on the IEC 60364 series, the 18th edition of BS 7671 Wiring regulations covers the electrical installation of buildings including the use of surge 18th edition of BS 7671 applies to the design, erection and verification of electrical installations, and also to additions and alterations to existing installations.
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