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Do-It-Yourself (DIY) Question & Answer Forum
Testing and Certification of DIY work
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<blockquote data-quote="Doc Hudson" data-source="post: 448214" data-attributes="member: 1607"><p>Welcome to the forum, I am a bit unclear about what level of work you suggest you did in the past? Would that include testing and certifying your work with an installation certificate adhering to the model forms given in the appendix of BS7617? Or are you just saying you fixed your accessories and joined your wires up then switched it on? Irrespective of Part-P, (which is a building regulation), BS7671 has for a long time, required all additions and alterations to be tested and certified to confirm they comply with wiring regulations. However within domestic installations BS7671 is guidance for good practice and non-statutory and DIY electrical work is permitted within the UK. If as you say the CU was replaced only 5 years ago and you do have all correct paperwork, assuming that the circuits were all tested as compliant, then adding a couple of outdoor sockets spurred off the ring is unlikely to make the whole installation a major safety hazard, providing the socket and cable size you want to extend from is suitable for the load likely to be added. I would ensure all external supplies have a double pole isolator switch at the point where they connect to the internal wiring. This can prevent an external cable fault from preventing an RCD from being re-energised. </p><p></p><p>Doc H. </p></blockquote><p></p>
[QUOTE="Doc Hudson, post: 448214, member: 1607"] Welcome to the forum, I am a bit unclear about what level of work you suggest you did in the past? Would that include testing and certifying your work with an installation certificate adhering to the model forms given in the appendix of BS7617? Or are you just saying you fixed your accessories and joined your wires up then switched it on? Irrespective of Part-P, (which is a building regulation), BS7671 has for a long time, required all additions and alterations to be tested and certified to confirm they comply with wiring regulations. However within domestic installations BS7671 is guidance for good practice and non-statutory and DIY electrical work is permitted within the UK. If as you say the CU was replaced only 5 years ago and you do have all correct paperwork, assuming that the circuits were all tested as compliant, then adding a couple of outdoor sockets spurred off the ring is unlikely to make the whole installation a major safety hazard, providing the socket and cable size you want to extend from is suitable for the load likely to be added. I would ensure all external supplies have a double pole isolator switch at the point where they connect to the internal wiring. This can prevent an external cable fault from preventing an RCD from being re-energised. Doc H. [/QUOTE]
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