Written by Mark Lloyd, Senior Product Manager- Power Supplies & Surge Protection
The current 18th edition version of BS7671, more commonly known as the wiring regs has been in force since January 2019, so a little over 3 years. I wrote a blog around the time predicting that the issue of surge protection would become much more of a hot topic and thankfully that has proved to be the case.
The list of instances where surge protection needs to be used was fairly clear and has resulted in surge protection being installed more routinely in domestic, commercial and industrial applications.
As a reminder the current 18th edition states:
Protection against transient over-voltages shall be provided where the consequence caused by over voltage could:
i. Result in serious injury to, or loss of, human life
ii. Result in interruption of public services and/or damage cultural heritage
iii. Result in interruption of commercial or industrial activity
iv. Affect a large number of co-located individuals”