Search results

Thanks for the replies and it all makes sense. In our case the supply is overhead so the cables exit our properties where they connect to each other and are then clipped to the neighbour's brickwork. While not desired if they caught fire then there should it shouldn't cause much damage as...

I understand that a looped supply involves two or more properties and the supply going into and back out of the cut out fuse and onto the the next property(s) such as shown here https://commercial.nationalgrid.co.uk/downloads-view-reciteme/430885 We've recently had an EV charger installed and...

If you have a twin and earth cable 2m long that is clipped directly to a solid brick wall with a metal capping over it and around 50mm of insulation is then applied to that wall how much should the cable be derated by? I can see that if it's completely surrounded then the factor looks to be 0.5...

It certainly doesn't suggest it's been well proof read.

We have ordered a Hypervolt and their install guide says to be generous with the incoming cable size and that 10mm or larger is recommended for long runs. https://support.hypervolt.co.uk/en/knowledge-base/home-3-pro-installation-guide

There is a bit of merit in that and it is something I did actually wonder when organising this. Clearly there are some extra losses using 6mm2 compared to 10mm2 but I think their figures are a little misleading. They're allowing for 1125 hours use per year which at 7.4kw is 8325kWh per year...

I'm completely with you regarding any network cable being fine for the data the charger would need but they use the data cable the CT clamp and I'm not up on how they work. 'Overthinking it' is pretty much the order of the day and as per my previous post I've messaged them to say carry on the...

Thank you very much for that link, there are a few like that although I believe that is CCA cable so personally I'd avoid that for something like this. Solid copper is about double the cost. As per my post above as there are no real benefits to using 10mm2 cable I've messaged Octopus to tell...

Thanks for your replies, I missed your one earlier. I can understand not wanting to utilise cable or other items provided by a customer although in this case the installer was happy to do so. It probably helped that it's a nigh on full 100m reel of cable I have and it was available for him to...

Thanks for the reply. Cost isn't a huge driver in this decision, it's more about if there is some other reason to do it with the main ones being safety and heat. 10mm2 would actually work out cheaper as our install is between 10m and 20m so we had an additional charge from Octopus for £99. As...

Thanks for the reply. I've heard of a number of people having problems getting Octopus to install EV chargers when it's anything other than straightforward however in our case they've been quite good. They have their rules and because it's not a straightforward install they sent someone out to...

Thanks for an amazingly quick response and sanity check. I just wanted to check I wasn't missing anything while I had the option to change.

I've got an EV charger being installed by Octopus in a week or two and it's not the simplest of installs as the consumer unit is in the middle of the house however due to some other works occurring at the same time and with some effort and floorboard lifting on our part it looks like we should...

As I said near the start of this thread, I do understand some of their reasons for trying to standardise their installs particularly regarding using an existing CU.

I've just heard back from Octopus and they're happy with the photos of the gas pipe provided and therefore that gas bonding is not required so hopefully that'll solve that problem. Now I just need to improve the rod earthing.

This is it in a nutshell, they have a number of their own rules such as only using a separate CU regardless of what consumer unit is actually installed already. As the charger is tied in with a car purchase we have to have Octopus install it hence trying to satisfy their requirements.

Thanks for that. That will likely explain where the info is from and it's interesting to see that what they want to achieve is if any extraneous conductive parts is disconnected it mustn't break the connector to the others which is what would happen if the wires were permanently joined together...

Hopefully Octopus will share that interpretation too.

(y)I've sent them some more pictures along with some other details just so they can confirm they're happy with my setup.

Thank you all for your helpful replies once again, they're much appreciated. Apologies if I've not been completely clear. There are only two earth cables from the CU, one goes to the earth rod outside and the other goes to the water pipe near the stop tap. When Octopus surveyed the house they...