Adrian Walker

I understand that it was in jest, based on the comments 🙂 However, you should never engage any professional based solely on price.

I think that's a bit harsh, especially as we have several professionals on Build Hub.

It’s similar to a machine surface symbol.

I presume that you have photographic proof of the construction by the builder?

An architect should be struck off for saying that.

Agree with your comments. This cable, as the name suggests, is for an EV charger of less than 20 metres, for voltage drop reasons. It was designed so that an EV charger only needs one entry point for data and power.

The Doncaster EV-Ultra cable contains four twisted pairs, more than enough for clamps and data

It’s CO2 that you need to measure and monitor

Or use Doncaster EV Ultra that has CAT5e inside https://www.yesss.co.uk/ev-ultra-cat5e-cable-4mm2-3-core-data-pvc-steel-wire-armour-black-0 They do a 6mm2 and a 10mm2 version.

Did you find anywhere?

He is looking to measure pressure not air pressure.

If you need any advice on VAT reclaim speak to Andrew at VAT431.co.uk

Have you thought about using self levelling concrete, CEMEX have Evolutuon.

Yes, use normal glass then get it toughen.

A visit to the National Self Build and Renovation Centre (NSRBC) in Swindon is a good place to start.