RCD Leads

[Adam_151]

Assume, indeed.
If it were a linear relationship then 10mm would be 4 x 24 (96amp) but it isn't.

There was a post on here a while ago that went into what the relationship was, cant remember it, but its due to the fact that while the 10mm has got 4 times the copper of the 2.5 its surface area is not 4x times that of the 10mm, so while the thermal energy generated in a 10mm carrying 96A will be the same as a 4 2.5mm each carrying 24A, its ability to shed that heat into the air is not the same. Try correcting the 24A for 4 cables tightly grouped and then multiply it by 4 and see if thats anywhere nearer the rating of 10mm

 

[Taylortwocities]

No, no.

Each conductor type has different current carrying characteristics. Tri-rated is vastly different to 7 stranded, for instance.
Use the manufacturer's tables or BS7671 for the rating of various cables.

However, IMO, using anything other than the maker's conductor's inside a consumer unit would remove any type approval that the box has. (eg. it may no longer comply with BSEN60439-3). When the innerds catch fire it will be your neck on the block.