Neff Induction Hob Installation Advice

[Alex Woodall]

Hi

New to the forum and wondered if anyone would be able to help re installing a Neff induction hob to replace an old Electrolux ceramic hob.

The existing hob is wired in through an isolator socket behind the worktops and is on its own ring with a 32A ECB in the fuse board. The current cable is 3 core and, though I can’t confirm the cable loading, is considerably more ‘chunky’ than the 5 core cable supplied with the new hob.

The wiring diagrams in the neff brochure are less than helpful as they appear to contradict each other for single phase wiring!
https://Upload the image directly to the thread.com/snZMKsd
https://Upload the image directly to the thread.com/EE4150r

The first diagram shows, even for a single phase supply Bu, Gy, Bn and Bk still going to different terminals whilst the second diagram shows Bn/Bk and Bu/Gy crimped together to form a 3 core setup.

This poses 2 questions:

1) Can I use the existing 3 core cable, to save having to get a spark out to change the isolator cable and potentially socket - I’m in London so this is never cheap!

2) If I can use the existing cable can I connect the existing earth to the earth terminal (straightforward), the existing neutral to either terminal 5 or 4 and then the existing live to 2 or 3 (less straightforward)?

As I said the diagrams appear less than helpful here!

Any assistance anyone can give would be hugely appreciated.

Many Thanks

Alex

 

[Midwest]

The copper ‘links’ are not always secured in the terminals. They’re sometimes stored together to one side of the terminal box.

 

[Grant webber]

[QUOTE="littlespark, post:
So brown and grey together as Live, black and blue together as Neutral. Green/ yellow to earth.

I'm sure the diagram says brown and black together for live

 

[littlespark]

Eek! So it does.
Looks like I can’t read a diagram either.

 

[telectrix]

the top middle pic shows connections to supply cable, Bkack and Brown is L. Grey and Blue is N. in the cooker, Brown to term. 2.Black to 3. Blue & Grey to 4and 5 (linked.then just earth (cpc) to the earth terminal. make sure all connections are tight and no bare copper outside the terminals. obviously, isolate supply at CU before starting

 

[Alex Woodall]

the top middle pic shows connections to supply cable, Bkack and Brown is L. Grey and Blue is N. in the cooker, Brown to term. 2.Black to 3. Blue & Grey to 4and 5 (linked.then just earth (cpc) to the earth terminal. make sure all connections are tight and no bare copper outside the terminals. obviously, isolate supply at CU before starting

Perfect and thanks - it seems pretty straightforward now I understand the diagrams...

Even bought myself a crimping tool set to make a neat job of attaching to the supply!