Can I straight swap 45A for 32A in consumer unit?

[echoes]

6mm² T & E cable should suffice for the connection between outlet and cooker. There's nothing wrong with using 10mm² but it might be a pig to terminate.

Either way, make sure the terminals are nice and tight.

There's no need to upgrade to RCD protection if you're just connecting a new cooker and not modifing the circuit, desireable though it may be.

As a clue to determining your cooker circuit cable size, have a look at the CPC (earth) conductor: 6mm² cable usually has a single CPC, and 10mm² is stranded.

 

[ban-all-sheds]

Circuits up to 32A have to be protected* with a 30mA RCD but larger circuits can have different RCD ratings.

 

[ajrobb]

I knew there was some difference above 32A - OSG "3.5.2 Disconnection times - TN circuits
A disconnection time of not more than 0.4 s is required for final circuits with a rating (ln) not exceeding 32 A. A disconnection time of not more than 5 s is required for final circuits exceeding 32 A, ..."

They are all 30 mA.

If the cooker circuit shares an RCD with smaller circuits it should be OK.

 

[RF Lighting]

You can normally acheive a 0.4 second disconnection without the use of an RCD.

Are you thinking of 411.3.3?

 

[Kyrie]

Thanks you guys... After MUCH delibertaing, I got a friend in to connect the cooker.

I told him my worries about the size of fuse/cable etc and he said new builds now have 40A standard and that my 45A would be OK.

THANKS again all

 

[aptsys]

^^ Sounds like he knows exactly what he's talking about