If you want a high temperature 2.5mm solid core (Flat Twin & Earth).
- Item 220592367957 on
- 2.5mm LSF BS7211 6242BH, 90oC XLPE insulation.
- 99p a metre.
They have miss-listed it BS6004 (PVC). However white sheath 6242 in Harmonised colours can only be BS7211 LSOH LSF LSZH 6242BH.
You do not need it though, think someone higher up just did the adiabatic calculation on the minimum required CPC.
Absolutely do not "solder flex ends" to make them solid.
- It is against BS7671 17th.
- Solder cold flow reduces the screw clamping force
- Thermal cycling exacerbates solder cold flow
- Joint becomes slightly loose, solder melts, loose connection
Now, that loose connection will heat the supply conductors back along the cable orange. Hopefully creating a short circuit where the cable/ flex bends and disconnecting the fault. Otherwise it can create a fire. The cooker's internal wiring will be high temperature glass fibre sheathed so will not usually be the the "fuse" in this situation. Obviously the cable connector block and internal wiring may still be a write-off.
This is exactly how a lecturer in 1998 stuffed a Miele Pyrolytic oven that was over =A31200. He tinned the copper fine strands "because that is how they used to be supplied by manufacturers of appliances and you fitted a plug yourself". The supply cable was charcoal, the units scorched, the oven internal wiring stuffed.
Big ovens use metric M5 M6 M8 studs with the fine strand or 7-strand conductors wrapped around between two washers squeezed together by a nut, or a ratchet crimped ring terminal used instead. For the oven design, use a bootlace ferrule - that provides a rigid cold-welded assembly. Might be worth waiting to see what connection the hob presents :-))