Can anyone here suggest why neither Screwfix nor Toolstation stock 32mm rubber grommets for the punchouts in the top of a consumer unit. I have numerous 20mm ones that I have used for all the other cables, but I couldn't get a 10mm2 T&E to work with a 20mm one. I punched out a 32mm hole in the CU only to discover that our hosts and their main competitor don't stock any 32mm grommets. I had to order them through eBay.
Always used stripe down piece of 2.5 mm sheath,cut down side edge. Slotted so that it bends.ps dont do consumer units anymore
OK, so you don't use grommets, but you do line the hole with the outer layer of T&E. The BG CU that I bought came with a length of liner, which I could fit, but it wouldn't close off the hole completely once the 10mm2 T&E was running through the hole. I thought that the hole had to be sealed off.
Our hosts sell the grommet pack for this CU British General Semi-Blind Fire-Retardant Grommets 13 Pcs | Grommets | Screwfix.com
Or there’s these ones, £3 cheaper: https://www.screwfix.com/p/wylex-me...cs/4019p#product_additional_details_container
Or do it with these https://www.screwfix.com/p/british-...le/3442p#product_additional_details_container