Wiring problem?

[Anthony CLARKE]

Hi Guys: Just about to replace a Stoves ceramic hob with a Russell Hobbs version. Both are NON-INDUCTION.
I see on the wiring diagram for the new unit that there are 4 connections - L1, L2, N and E. The N and E are easy enough but the only time I have come across L1 and L2 has been in. lighting wiring. The instructions show brown wire to L2 and black to L1. I am pretty sure (before disconnecting the old Stoves model) that there are only the three wires - brown, blue and green/yellow on the existing feed cable. Will it be in order to just connect brown to L2, blue to N and yellow/green to Earth.
Your comment would be most welcome. TIA

 

[terryplumb]

Show us the wiring diagram. You may need to link the two live terminals ,but we need more information, preferably pics of the actual terminal block in the hob .
What kilowatt rating is your new hob ?

 

[TimboTwo]

I would suggest L1 and L2 go together, that is normal for UK use. In EU they have 16A circuits hence the two lives, one per 16A circuit.
Do you have 2 wires for neutral as well?

 

[Anthony CLARKE]

Hob is 6Kw


Installation Electrical connection

• WARNING- THIS APPLIANCE MUST BE EARTHED
  
  
• This appliance is designed to be connected to a 220-240V~50Hz/60Hz AC
  
  electricity supply.
  
  
• Before proceeding with the electrical connection, verify that the current
  
  carrying capacity of the system and the isolator / main switch is adequate for
  
  the maximum power rating of the hob.
  
  
• Electrical installation of the residence and of the appliance’s isolator must be
  
  earthed and conform with the required safety regulations.
  
  
• If there is no suitable circuit and a fused switch, they must be installed
  
  by a qualified electrician before the hob is connected.
  
  
• An isolator switch must be easily accessible once the hob has been installed.
  
  
• Do not use adaptors, multiple sockets and/or extension leads.
  
  
• A circuit breaker with a contact opening of at least 3 mm, rated 32A and
  
  delayed functioning type must be installed inside the supply circuit.
  
  
• During installation, please ensure that insulated cables are used. An incorrect
  
  connection might damage your appliance and will void the manufacturer’s
  
  guarantee.
  
  
• All repairs must be carried out by an authorised service personal or a
  
  qualified electrician.
  
  
• Switch off/isolate your appliance before each maintenance.
  
  
• Wiring diagram is below:

 

[Anthony CLARKE]

TimboTwo: Only one N connection

 

[Anthony CLARKE]

Installation Electrical connection

• WARNING- THIS APPLIANCE MUST BE EARTHED
  
  
• This appliance is designed to be connected to a 220-240V~50Hz/60Hz AC
  
  electricity supply.
  
  
• Before proceeding with the electrical connection, verify that the current
  
  carrying capacity of the system and the isolator / main switch is adequate for
  
  the maximum power rating of the hob.
  
  
• Electrical installation of the residence and of the appliance’s isolator must be
  
  earthed and conform with the required safety regulations.
  
  
• If there is no suitable circuit and a fused switch, they must be installed
  
  by a qualified electrician before the hob is connected.
  
  
• An isolator switch must be easily accessible once the hob has been installed.
  
  
• Do not use adaptors, multiple sockets and/or extension leads.
  
  
• A circuit breaker with a contact opening of at least 3 mm, rated 32A and
  
  delayed functioning type must be installed inside the supply circuit.
  
  
• During installation, please ensure that insulated cables are used. An incorrect
  
  connection might damage your appliance and will void the manufacturer’s
  
  guarantee.
  
  
• All repairs must be carried out by an authorised service personal or a
  
  qualified electrician.
  
  
• Switch off/isolate your appliance before each maintenance.
  
  
• Wiring diagram is below:
  

 

[terryplumb]

Installation Electrical connection

• WARNING- THIS APPLIANCE MUST BE EARTHED
  
  
• This appliance is designed to be connected to a 220-240V~50Hz/60Hz AC
  
  electricity supply.
  
  
• Before proceeding with the electrical connection, verify that the current
  
  carrying capacity of the system and the isolator / main switch is adequate for
  
  the maximum power rating of the hob.
  
  
• Electrical installation of the residence and of the appliance’s isolator must be
  
  earthed and conform with the required safety regulations.
  
  
• If there is no suitable circuit and a fused switch, they must be installed
  
  by a qualified electrician before the hob is connected.
  
  
• An isolator switch must be easily accessible once the hob has been installed.
  
  
• Do not use adaptors, multiple sockets and/or extension leads.
  
  
• A circuit breaker with a contact opening of at least 3 mm, rated 32A and
  
  delayed functioning type must be installed inside the supply circuit.
  
  
• During installation, please ensure that insulated cables are used. An incorrect
  
  connection might damage your appliance and will void the manufacturer’s
  
  guarantee.
  
  
• All repairs must be carried out by an authorised service personal or a
  
  qualified electrician.
  
  
• Switch off/isolate your appliance before each maintenance.
  
  
• Wiring diagram is below:

No wiring diagram and no pics ,but duplicated info.

 

[Anthony CLARKE]

Sorry can't get it to show actual wiring diagram

 

[terryplumb]

Show us a pic of your new hobs terminal block.

 

[Anthony CLARKE]

I've taken a photo of it but still cannot get it to add in to my post. New Hob arrives tomorrow. I will photograph and post then.

 

[Anthony CLARKE]

 

[terryplumb]

L1 & L2 need to be linked. There is very often a " U" shaped piece of copper supplied with the hob ,that you fit into those two terminals, sometimes it's already in place. Hence the request for a pic of the actual terminal block.

 

[Anthony CLARKE]

terry plumb: Many thanks. I will post a photo of terminal block when the hob arrives today.

 

[Anthony CLARKE]

Hi Guys. Hob arrived today. No 'Terminal Block' as such. Cable attached with four connections - brown & black, Blue and green. Simply connected to a junction box with existing wire (which is connected to 'Big Red Switch' and all working fine.
Many thanks for your input. As ever, much appreciated.

 

[Colin Brenton]

Sounds straightforward enough.

Join the black and brown from the hob flex to the red (or brown) from the switch.
Join the blue from the hob flex to the black (or blue) from the switch.
Join the green and yellow from the hob flex to the green and yellow (or green) from the switch.

Worth checking that the junction box is heavy duty enough for the current (needs to be capable of handling 6mm cable, and 32 Amp rated. Post a picture if dubious.

Sorry, just re-read this and looks like you've done it now, lol.

Cheers,
Colin