What to do with my Frankenstein fuse box?

[SUNRAY]

That's a very specific, and (for domestic) almost uncommon enough to be described as 'irrelevant', anecdote - so I struggle to understand how your response in any way addresses my question (to which your were apparently replying, since you quoted it) (with my emboldening)...
What am I missing ?

Kind Regards, John

It happens to be the only specific survey I have in my notebook, with the results of the online calculator, although it was certainly not domestic but it was a classic example of a proposed radial circuit. In point of fact the customer had requested a '25A radial' for economy reasons (Cheapest installation).
Planning a domestic radial would, IMO, compare very favourably with that situation, ie dropping every few metres from the ceiling to sockets very quickly adds up.
I haven't bothered trying to calculate the maximum length for a 2.5mm² 25A circuit but I'd guess its mid 20's under ideal conditions, that would be eaten up with 6 drops.

 

[EFLImpudence]

Planning a domestic radial would, IMO, compare very favourably with that situation, ie dropping every few metres from the ceiling to sockets very quickly adds up.

It would (quickly add up) maintaining a ring like that by dropping to socket then returning back up the same route, but -

I haven't bothered trying to calculate the maximum length for a 2.5mm² 25A circuit but I'd guess its mid 20's under ideal conditions, that would be eaten up with 6 drops.

for a radial, each drop has no effect on the total length of another.

Assuming 25m. then a 22m. run with a 3m. drop at the end could have any number of 3m. drops along the route without altering the maximum length.

 

[JohnW2]

It happens to be the only specific survey I have in my notebook, with the results of the online calculator, although it was certainly not domestic but it was a classic example of a proposed radial circuit.

That was my point - it was a single anecdote, relating to a situation which would be extremely unusual in a domestic setting, so I still don't understand why you used it to support your statement that ...

Because, IME, it's not very often calcs allow a 25A MCB on a domestic multipoint 2.5mm² radial.

I think I must still be 'missing something'!

Kind Regards, John

 

[SUNRAY]

It would (quickly add up) maintaining a ring like that by dropping to socket then returning back up the same route, but -


for a radial, each drop has no effect on the total length of another.

Assuming 25m. then a 22m. run with a 3m. drop at the end could have any number of 3m. drops along the route without altering the maximum length.

Do I assume you are advocating installing a junction box of some sort for every socket?

That was my point - it was a single anecdote, relating to a situation which would be extremely unusual in a domestic setting, so I still don't understand why you used it to support your statement that ...
I think I must still be 'missing something'!

Kind Regards, John

Yes I think you missed the part about reading my post where I described a known circuit, a very similar comparible circuit could EASILY be found in a very average domestic property.

 

[EFLImpudence]

Do I assume you are advocating installing a junction box of some sort for every socket?

It was you who introduced drops from ceiling - or conduit.

 

[SUNRAY]

It was you who introduced drops from ceiling - or conduit.

But not introducing junction boxes.