We receive a huge number of contacts from parties concerned about Amendment 1 to the 18th Edition Wiring Regulations in relation to EV charging infrastructure, requesting support to manage the touch safety potential requirements.
The Wiring Regs call for a T/T earth to be installed unless the huge volume of calculations required can be satisfied and evidenced. Doing anything other than provide a T/T earth if those calculations are not evidenced is non-compliant with legislation. Conventional methods of installing a T/T earth see the reliance on earth rods and other metallic conductors prone to deterioration and therefore leaving the possibility of an unsafe system in the time following installation. As such the permanent T/T earthing methods we advocate are the logical solution to effectively manage fault current, and mitigate the legal and safety risks of non-compliance.
By adopting our products and methods parties will fully comply with the requirements of ‘BS 7671: 2018 Requirements for Electrical Installations IET Wiring Regulations Eighteenth Edition, Amendment 1:2020’.
Now that the Prime Minister has laid down a renewed ambition for the adoption of Ultra Low Emitting Vehicles the need for safe charging infrastructure is more important than ever. This being the case, taking a chance with earth rods or other speculative methods of managing fault current is a needless risk. Use the proven method, do it once and do it right.