TonyT

Didn’t the HSE pay a lot of staff off a few years ago? I’m client on a number of sites and in 10 years I’ve never had HSE on site, considerate contractors inspections all the time ?

What does the manual for the specific velux blind you have bought say?

I’m sure they are less efficient when integrated, in 99.4% certain I read that the cooling effect behind the panel improves efficiency, but this was 10 years ago when mine were fitted..

Sure, loop the power supply from the first light to the next and so on.

Use a nail as a spacer

Either cut the plywood to land on existing supports or add extra supports. probably quicker to cut the ply.

Did the same as CPD.

Just get 2core as you will be exporting the PME earth (take a picture of the electricity cut out for us to see to confirm ) bash in a local earth rod next to the gates and connect a 10mm earth from the rod to the gate electrics, isolator etc.

Your not meant to put your own equipment in the same meter box enclosure where the DNO have their meter, however you will be having a switchfuse like a Wylex KMF unit to protect your sub main back to the house. so you could just install a small consumer unit and split the rails. PME is a type of earthing arrangement that’s not great for hot tubs, EV’s and chunks of metal with electrical supplies that you can touch the general mass of earth at the same time.

And best make sure the metal gates aren’t fed from a PME supply

What’s inside the boundary box?

Wind is blowing rain up through a flashing?

Get a plastic joint box. Drill a hole in the bottom about 50mm drill 2 holes and use 2off 2BA machine screws to fix plastic box to metal conduit box. or cut conduit, use a knock on adaptor and change to plastic conduit/ JB etc Lots of ways of making it compliant

Yes it’s twin and earth and 3 core and earth, red and black and red,yellow and blue being the old colours prior to 2004

Yes, just put a few cable clips to hold it in place. twin and earth doesn’t need to be run in conduit , it can be clipped direct to the building fabric

Just put pliers in the conduit once it’s cut and give it a few turns this will deburr the conduit then slip the over gromett.

As you have twin and earth, pull cable out of Conduit. cut conduit https://www.google.co.uk/search?q=push+on+20mm+conduit+gromett&tbm=isch&ved=2ahUKEwjb267_-4jxAhUNNBoKHSCvBx0Q2-cCegQIABAC&oq=push+on+20mm+conduit+gromett&gs_lcp=ChJtb2JpbGUtZ3dzLXdpei1pbWcQAzIECB4QCjoECCMQJzoECCEQClCdC1iuGmDfHGgAcAB4AIABV4gB7ASSAQE5mAEAoAEBwAEB&sclient=mobile-gws-wiz-img&ei=fd-_YJupCo3oaKDenugB&bih=553&biw=375&client=safari&prmd=sivn#imgrc=O29Bu6NxI4z7KM Fit gromett over conduit, push cable out to new position.

Garage run in swa fed from Mcb garage consumer unit with RCD in that

Main bonding is just some 10mm2 earth from the consumer unit to gas and water pipe. a couple of earth clamps and that’s done- easy to do yourself. the boards more difficult as you may have underlying faults that are fine at the moment cause you have fuses, change over to Rcbo’s and you may have circuits that won’t work... of course you could buy a few mcbs and in such a case change to mcb and seek professional help on the faulty circuits. may be worth an eicr first to identify any issues prior to fuse board change, the test results also come in handy for the eic (certificate) for a new install I would allow a day to change a consumer unit and do testing/certification. nearly £2k is kicking the arse out of it.

Makes sense to have any circuit that you want on its own to minimise inconvenience. that’s why I have the fridge on its own circuit, only the fridge can affect the fridge not anyone else plugging equipment into the general kitchen sockets. That’s an rcbo just for the external lights then. Look for a brand of consumer units called fusebox, they sell rcbos for £10 ish. lots cheaper than say Wyler, Hager or Schneider.

No one bothers to notify on existing buildings about external cabling. I would forget about that and just make sure it’s done properly and properly tested. following the regs you shouldn’t be altering circuits without adding the Rcbos as you are now making the installation unsafe

Does the light fitting have any twin and earths or single core conductors? the conduit may have been the conductor containment and the earth, so cutting into it may affect other how old is the existing electrical installation? do you have RCD-/rcbo protection at the fuse board? do you have metal light switches with earth conductors to the face plate?

Tell them you want a re quote for 23kVA supply( 100 amp)

Wago connectors

Best check what the DNO for your area say regarding the meter, meterbox, hockey stick duct etc.