4 mm Cooker circuit 32amp MCB

[Engineer54]

Its Called Diversity my Dear Watson lol

And if you buy one of these you will only need two sockets
Hoover HOC709-6X Built In Electric Single Oven - Stainless Steel

Me thinks that 13A fuse will be blown before the diversity has a chance to kick in!! lol!!

Yeah, plug em both into a ring circuit, sounds about right!!

 

[nickblake]

Alot of the hob and cooker manufacturers now stipulate 4mm to wire the cookers in ,from the connection plate that is

 

[Paul508]

I have just been asked to look at a new double cooker install, the installer has connected the oven by 6mm to a 45A cooker switch and then connected the switch via 4mm to a socket on a 4mm radial protected by a 32A RCBO. Now I expect the RCBO to suitably protect the circuit but has anyone else seen this setup before?

 

[LastManOnline]

I have just been asked to look at a new double cooker install, the installer has connected the oven by 6mm to a 45A cooker switch and then connected the switch via 4mm to a socket on a 4mm radial protected by a 32A RCBO. Now I expect the RCBO to suitably protect the circuit but has anyone else seen this setup before?

Never. First observation is that it's unlikely it was installed by a conventionally trained electrician.A cooker should have its own circuit. Most countries would require it (can, t speak for UK) And if it is allowed, it is terribly poor design.
. Next obvious question is... Is it unsafe? Well like you I would have to conclude that technically the circuit is protected from overload by the 32 amp rcbo. But this has the potential to be a very heavily loaded circuit and cause inconvenience depending on what other appliances are in circuit.

 

[Paul508]

Thank you LastManOnline, it was installed by a B&Q kitchen fitter. It is on the same circuit as a washing machine, a freezer and a kettle so I think using diversity it’s within the scope of the RCBO but I think I will err on the safe side and get an electrician to check it