2.5mm flex or 6mm t+e

[nathan-d1]

Changing to built in double fan oven. 45A cooker switch which is supplied with 6mm from 20A mcb . Double fan oven is rated at 4.1kw.

4100/230=17.82

Would the flex be ok as it can carry up to 25A and less than a metre be used.

What do you guys suggest?

 

[Engineer54]

Why do people go on about ''Must be heatproof 90c rated''?? , are both the terminated connections rated 90c, i doubt it, certainly not at the wall accessory anyway, So the 90c cable then has to be derated to 70c anyway...


In all the years i've been around, i've never seen radiated heat damage from connected Cookers/Ovens that have been wired with Normal building wire, typically 6mm T&E. So i can't see any problem using a suitably current rated 70c rated flexible cable.

 

[MDJ]

I don't rate flex myself, just trying to get the op to let us know what he thinks about it all, ever tried connecting a 2.5mm2 flex into a cooker terminal? if they come pre flexed great, but if not LOL, good luck sleeping at night, unless you know what your doing which is debateable here, wondered if the op had ever used it hence the questions, and if your going to use flex use HR for a cooker IMO, lets hope the cooker has a terminal block and not the type which most cookers have as connecting flex in one of those won't be an assured connection, for an enthusiast.

 

[Engineer54]

I don't rate flex myself, just trying to get the op to let us know what he thinks about it all, ever tried connecting a 2.5mm2 flex into a cooker terminal? if they come pre flexed great, but if not LOL, good luck sleeping at night, unless you know what your doing which is debateable here, wondered if the op had ever used it hence the questions, and if your going to use flex use HR for a cooker IMO, lets hope the cooker has a terminal block and not the type which most cookers have as connecting flex in one of those won't be an assured connection, for an enthusiast.

One would hope the appropriate crimped termination would be used at the oven's connection/terminal block... As you state unless the oven/cooker came with a factory fitted flexible cable, i'd stick with the old tried and proven method, of using appropriately sized T&E...lol!!

 

[GLENNSPARK]

One would hope the appropriate crimped termination would be used at the oven's connection/terminal block... As you state unless the oven/cooker came with a factory fitted flexible cable, i'd stick with the old tried and proven method, of using appropriately sized T&E...lol!!

this is it....there seems to be this allergy to T&E for cookers..lol..
if they bothered to look they would realise that the cable comes into the cooker from the bottom...
so i suppose that heat don`t rise then?...

 

[MDJ]

Yep Twin and earth for me as well, but I am interested to get the OPs idea regarding Flex, I would avoid it, but If I had to use it I would go 4mm2, that way I could charge the customer more :21:

 

[Geoffsd]

No, heat doesn't rise.

Only hot air (or other gases and liquids) rises.

 

[GLENNSPARK]

No, heat doesn't rise.

Only hot air (or other gases and liquids) rises.

end of the day T&E is suitable for cooker connections....its how its been done for years....and will continue to be done so.....capish..

 

[Engineer54]

On modern oven's, especially on the fan assisted type, the excess heated air from the oven, exits from the front of the oven, ...not at the rear!!

 

[MDJ]

I still can't understand the question, a 6mm2 T&E or a 2.5mm2 Flex, theres quite a difference in size here haha

 

[GLENNSPARK]

I still can't understand the question, a 6mm2 T&E or a 2.5mm2 Flex, theres quite a difference in size here haha

no doubt it will be an existing supply mike....
and what they are wantin to know is if you have 6mm flat coming into the iso....is it ok to have 2.5 flex goin out....
i mean, all they have to do is look on a website for the max CCC for flex for christs sake....they`v got 20A OPD feeding this.....
beyond words...it really is.....