Cable type ... current carrying capacity

[Paul_Williams]

I'm looking at an install of a double oven cooker ... 11.3kW maximum demand ... and rather than use 10mm T&E for the final connection I have been looking at the CCC tables in Appendix 4

Table 4E2A on page 368 (3rd Amend of 17th) states I should be able to use a cable with 6mm CSA conductors, but can anyone tell me what the name of the cable is as referred to in Table 4E2A.

The highest CCC that I have been able to get confirmed is for 6mm "TQ" which is to BS6500 and can handle up to 48A ... frustratingly close to the 50A circuit I need to install.

Doe anyone know what British Standard number cable that Table 4E2A is referring to???

Looks like I will have to fight with some 10mm T&E, but it would be nice to make the final connection in 6mm flex.

Any help would be greatly appreciated.

Regards,
Paul

 

[Paul_Williams]

If you want flex then why are you looking at 4E2A, that is not the table for flex!

It does not refer to a specific bs number, it is a basic table for any unarmoured multi core with a 90degree operating temperature. Which will not be suitable for your application as the terminals you connect to will not be suitable for 90degree operation

Doh!

Got side tracked with Note 3 beside the table ... "For cables having flexible conductors ...".

It's all a bit moot now then ...

Should have stayed in bed the other day ...

 

[Spoon]

I would hope so ... although the other fly in the ointment was trying to find a cooker connection point that is rated at 50A ... all that I have found to date are rated for 45A ... including Crabtree who I thought might be the ones to use.

Both post 6 and I was referring to the 90 deg C bit, not the amperage.

 

[Midwest]

Indeed I did, my initial issue was a lack of data from the manufacturer ... which has since been corrected.

However ... and as there is a strong possibility the property will become a B&B / Guest House ... Table H2 the second column relating to "Small shops ... business premises" is more fitting than the "... household ... dwellings ..." column ... the former requiring allowance for 100% of largest appliance plus 80% of second etc. ... so at the time of limited information and only having a maximum demand figure of 11.3kW my initial design had to at least allow for the potential of that amount of power to be drawn ... hence looking for a flex capable of handling 50A in free air or better still clipped direct ... it would have been easier to dress the cable in than 10mm T&E.

But ... all that is now history ... although the underlying question still remains as to where can you get a cable fitting Table 4E2A ??? ... and what type/BS number is it?

Haven't got a copy of GN1 myself. But isn't reference to the small shops & business to multiples of appliances, not one, re applying diversity? ....'all now history', are you not installing the appliance now?

 

[davesparks]

I would hope so ... although the other fly in the ointment was trying to find a cooker connection point that is rated at 50A ... all that I have found to date are rated for 45A ... including Crabtree who I thought might be the ones to use.

Your hopes will be in vain, there is no way any standard cooker plate will be rated for 90degree operation, they will be 70degree.

 

[telectrix]

could perhaps usea crabtree shower pull switch, 50A rating, but don't allow the cord to dangle in the stew. :77:

 

[sparksburnout]

I would hope so ... although the other fly in the ointment was trying to find a cooker connection point that is rated at 50A ... all that I have found to date are rated for 45A ... including Crabtree who I thought might be the ones to use.

FFS its never going to get near this are you doing this for a paying customer?