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Section 7.3 of the file grams has linked to.
BS 7671 531.3.3. is the paragraph in the regs that states a type b should be used.
Also some worthwhile reading:
https://www.voltimum.co.uk/articles/heat-pump-installation-18th-edition-rcds
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If you're getting your CU upgraded it will more than likely have RCBO's, Heatpumps shouldn't be fed by an RCBO as the DC leakage current can cause issues. They require a Type B RCD, significant more expensive than a Type A.
https://www.youtube.com/watch?v=jzpZSTUCqTE&t=38s
You'll probably end up with a RCBO consumer unit and 2nd smaller Type B RCD board feeding the ASHP.
Or do what my installer did and slam an MCB into an RCBO board and provide a certificate stating a type B RCD had been installed. Returning to rectify once he was called out on it.
Other considerations/brain dump:
Location of ASHP from CU, as part of the wider work, would installing the cable now be an option
Location of EV charger from CU, same as above
What type of electrical supply do you have to your house, is it looped(in your meter cupboard, do you have 1 or 2(looped) black cables entering the property) if its looped the DNO will need to appove before an EV charger can be installed.
Size of DNO cut out circuit breaker, if my EV charger and ASHP are both running, I draw 54A, my cut out is 100A, but many houses are 63A -
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Searches on the place I'm buying came back in 7 business days(albeit based in the NW) . Getting my supposedly chain free seller to complete their paperwork in a timely manor is causing my delays.
Offer made on 13th March
Accepted on 14th March
Memo of Sale delayed until 23rd March whilst they choose a solicitor.
Title Plan/Register documents provided 13th April, with sufficient information to instruct the searches, but no TA6 or TA10 documents.
Searches instructed 14th April
Searches report returned 24th April
Still waiting for TA6 & TA10 forms to be able to submit enquires. -
From a quick google, "The requirements of BS 7671 are applicable to the installation of network data cables within a building – refer to (110.1. 2 indent (vi))." My understanding(happy to be corrected), the cables should run within prescribed zones, unless buried >50mm into the wall.
https://flameport.com/wiring_regulations/BS7671_selected_subjects/zones_concealed_cables.cs4
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https://www.gassaferegister.co.uk/gas-safety/gas-safety-certificates-records/
Should be able to check if it has a gas safety certificate here.
Sorry, should add, I've had no issues with the car, perfect for what I need nursery/school run.
4 years in, no noticeable degradation of the battery. 140ish miles in summer, 110miles in winter, driven in normal mode(out of Eco, Normal & Sport) KERS level 3(default highest setting).
Average of 3.6 Miles/kWh over the 4 years.