It is currently 29 Mar 2024, 13:08
AJB Temple wrote:Thanks both. I have absolutely no intention of competing with anyone - I am not going to be going round to people's houses doing rectification work. I would just like to be able to sign off my own safety tests for Part P compliance on my own property. This is all brand new wiring to best spec and fully in compliance with 18th edition regs.
I know how to do the tests now, I have the equipment, and I do my own tests anyway before the certifying electrician comes along. Part of the reason is I used to use a really nice chap who did practically all of our electrical work including the commercial stuff. But he has emigrated. Since then I have had a couple of experiences with "qualified" electricians who were unimpressive.
sunnybob wrote:In fact it scared one fellow so much that he quit and changed professions
HappyHacker wrote:There are bits of equipment that claim to disconnect the supply in the event of a fault or loss of neutral removing the need to TT the charger but these do not so far meet the requirements of BS7671 so their installation is at your risk.
AJB Temple wrote:
Not sure what a Category A building is. We only have listed buildings here, Grade1, 2 and 2 but no one really cares.
AJB Temple wrote:18th Edition regs Section 10.2.2b requires heat / fire / smoke alarm systems to be interlinked, and is prescriptive as to locations. Interlinked is usually interpreted as mains wired with battery back up. Regs require permanently wired usually with own circuit to CU.
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spb wrote:HappyHacker wrote:There are bits of equipment that claim to disconnect the supply in the event of a fault or loss of neutral removing the need to TT the charger but these do not so far meet the requirements of BS7671 so their installation is at your risk.
Amendment 1 changes that - it adds provision for protective devices based on supply voltage changes specifically for EV chargers, as well as any other protective device which provides equivalent safety to one of the enumerated options. That makes the current generation of chargers with built-in protections against lost PEN compliant on a TN-C-S system with no extra work.
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