Shower Cable - to be 6mm2?

Hay diddle diddle bas had a piddle, all over the kitchen floor
Mr. HandyAndy laughed to see such sport
So bas did a little bit more

 

Hay diddle diddle bas had a piddle, all over the
kitchen floor
Mr. HandyAndy laughed to see such sport
So bas did a little bit more

:^O

 

16mm2 on a 11kW shower......ferk off

16mm will do 16kw for the average house.
Ant

 

How you can say 4D5A is not the table to use for flat twin and earth cable?

Good god man.... I'm not

I'm saying

THERMAL AND SOUND INSTALLATION
One of the features of a modern dwelling is the
requirement in Parts E and L to meet the thermal and
sound deadening requirements of the Building
Regulations. The IEE recently carried out some work
to determine specific ratings for twin with earth
cables when insulated in a thermally insulated wall
see table 4D5A of BS7671, table 6F of the On Site Guide

 

I said 4D5A was the table to use, you said it was not the one to use, and that 4D2A (or was it 4D1B?) was more appropriate, and then when I pointed out that everywhere you look it says 4D5A, you quoted an article which says 4D5A...

 

35 Amps average anyone?

 

If you're a shower manufacturer, and you're giving advice on cable sizes, and don't want to confuse your customers by talking about installation methods, what can you do except take the worst case figures from the tables published in the regs or the OSG?

 

Monkeh we need you!

 

Back to the 'original' point, I changed a CU last week and was also asked to upgrade the Shower cable to 10mm T&E, the customer was going to fit a 9.6KW shower..


The cable length to the shower (via pull cord) was 3 metres ))..(6mm T&E), clipped direct (RM1 46A).


I told him no upgrade was required and fitted a 40A mcb (via the RCD side of the split CU)..

Correct, as per table 4D2A..?

 

Mind if I laugh ?

:O:^O:^O



Mr. HandyAndy - really

well either share the joke with us all thats so funny
or contribute something usefull to the disussion...

Or perhaps you know nothing again :^O

Mr Fooman - Really Really Really





I AM sharing the joke. And laughing at it.

Seems I'm not the only one who doesn't know what they're talking about. This thread, looks like one that I could have dreamed up.

Yes it is. No it isn't. But, but, but.........


Mr. HandyAndy - really

 

Easy at max dep on voltage 39-42amps
Ant

 

I said 4D5A was the table to use,

And I said that 4D5A was not the correct table

My references to 4D5A was in context in its correct use.. which is not as it being the default table.

 

Are you going to go wrong using 4D2A? No, the ratings are the same or lower.

Does this matter in practice? It might, if you followed it strictly, and found that you couldn't use 2.5mm² for a ring final, when if you'd used 4D5A you could.

Does it mean that 4D5A is not the correct table to use for flat twin & earth? No.

 

Copy & Paste

It should however be noted that for PVC sheathed flat cables two current rating tables are given 4D2A and 4D5A.
4D5A should be used where Reference Method 1 is applicable, AND where these cables are in contact with thermal insulation on one side (Installation Methods 6 and 15). 4D2A should be used for other applications including where Reference methods 3 and 11 are applicable.

Is it clear now ?

 

Q: 4D5A is the table to use to look up the current carrying capacity of flat twin & earth cable.

a) YES [ ]
b) NO [ ]

 

4D2A is for round cable

Is it f*

 

Maybe!

 

On an average job in an average building its answer b

 

It is round I spose!