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Help with Periodic Coding
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<blockquote data-quote="OldPeeBee" data-source="post: 69341" data-attributes="member: 4253"><p>I have just finished a PIR on an extended bungalow with a stable block - was rewired when the extension was built (3 years ago) but the work wasn't notified. Owner wants a certificate, so the builder has asked me to do a PIR for the installation.</p><p></p><p>Generally, most things are testing OK; however, I could do with some comments on coding for the following:</p><p></p><p>1. Main earth to a MET block in 16mm; earths to 3x distribution boards in 10mm; water bonding in 16mm!</p><p></p><p>2. DB4 is in the stable block (built of wood on concrete base; water supply present but in plastic pipe throughout) and is fed from a 40A MCB in DB3 via 10mm 3core SWA - armour has been split into two bundles, taped with green/yellow tape and inserted into DB3 earth rail. At DB4 end this has not been done. Supply is TNC-S. Zdb at DB4 is 0.83.</p><p></p><p>3. Rcd test at DB4 trips the RCD at DB3. I am thinking of changing the RCD at DB3 for a plain main switch as DB3 has circuits for a cooker - no socket; water heater and the stable block.</p><p></p><p>The builder is anxious not to upset the owner with an unsatisfactory report and I haven't completed the paperwork yet. If he gets me to rectify the faults, would I be OK to then issue a satisfactory report or should I produce an unsatisfactory one and then certify the repairs separately?</p></blockquote><p></p>
[QUOTE="OldPeeBee, post: 69341, member: 4253"] I have just finished a PIR on an extended bungalow with a stable block - was rewired when the extension was built (3 years ago) but the work wasn't notified. Owner wants a certificate, so the builder has asked me to do a PIR for the installation. Generally, most things are testing OK; however, I could do with some comments on coding for the following: 1. Main earth to a MET block in 16mm; earths to 3x distribution boards in 10mm; water bonding in 16mm! 2. DB4 is in the stable block (built of wood on concrete base; water supply present but in plastic pipe throughout) and is fed from a 40A MCB in DB3 via 10mm 3core SWA - armour has been split into two bundles, taped with green/yellow tape and inserted into DB3 earth rail. At DB4 end this has not been done. Supply is TNC-S. Zdb at DB4 is 0.83. 3. Rcd test at DB4 trips the RCD at DB3. I am thinking of changing the RCD at DB3 for a plain main switch as DB3 has circuits for a cooker - no socket; water heater and the stable block. The builder is anxious not to upset the owner with an unsatisfactory report and I haven't completed the paperwork yet. If he gets me to rectify the faults, would I be OK to then issue a satisfactory report or should I produce an unsatisfactory one and then certify the repairs separately? [/QUOTE]
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