Surge Protection – Latest BS 7671 Wiring Regulations

A new key section (534) within the latest edition of BS 7671 Wiring Regulations published on the 1 July 2011 came into  effect on 1 January 2012.

Section (534) now sees a requirement for all new electrical installations designed after 1 January 2012 to include the correct selection and installation of a SPD’s (Surge Protection Device).

This requirement is to provide protection against over voltages from atmospheric origin (lightning) or electrical switching events both of which are capable of severely effecting electrical installations and connected equipment.

The risks to life, buildings and electronics due to over voltages are detailed within BS EN 62305 ‘Protection Against Lightning‘ with the standard clearly detailing a risk assessment to establish the type and level of SPD’s required.

Churchill offer a full range of SPD’s manufactured by the world’s leading suppliers, this is supported by free comprehensive advice together with free seminars to larger clients explaining the fundamentals of SPD’s.

The most popular SPD on the market and the one most commonly installed is the Furse ESP 415 M1 which is an enhanced protector for three phase supplies of 346 – 484 volts, for single phase supplies of 200 – 280 volts the ESP 240 M1 should be employed.

For more information of SPD’s call our helpdesk on 0844 504 9998