13 Amp plug on a 2.9kW oven

[JT101]

Hi Everyone

So i've installed my first kitchen and everything has gone well. I've wired in the oven based on a sparkies recommendation but I just want to check I've done things correctly and try to understand a bit more about cooker circuits.

The oven is a single NEFF fan oven 2.9kW . There are no other ovens in the kitchen, and just a gas hob. The previous kitchen that had been installed in the last few years has a dedicated cooker switch which goes back to the circuit board on it's own dedicated fuse. Next to this fuse is a shared 30A RCD which covers the oven, ground floor lighting, sockets etc. A socket is spurred off of the cooker switch and is controlled by it. It is at the back of the oven unit.
2900W / 230V = 12.6Amps. So I put some 2.5mm flex on the oven with a 13A plug, and plugged it into the spurred socket. I'm pretty sure this is what the sparkies recommended to me.

Based on this I've got a few questions I hope someone can help me with.

1) Is this safe / correct setup, and do I need to have it certified and tested by an electrician?

2) I can see that you want a fuse as close as possible to the maximum rating of an applicance, but just out of interest what could happen if you put a 12.6A cooker on a 30A fuse? For example, if there was a fault in the oven, could it get hotter and hotter and hotter and start a fire before it tripped out at 30A?

3) Both sparkies I spoke to said to use 1.5mm flex on the oven. But I thought this was only rated up to 10A? I put a 2.5mm cable on there in anycase which I believe is rated to 13.5A, but a 1.5mm would have been a lot easier to wire into the plug.


Many thanks. Looking forward to your responses

 

[davesparks]

One well known kitchen manufacturer stipulates no more than 2mtrs of flex on their ovens for example.

I would guess that is a hang up from when the regulations prohibited a flex permanently connected to the fixed installation from being longer than 2metres

 

[JT101]

Just an update if it's of any use to anyone. I managed to get hold of a copy of the manual and it does infact give you the option of using a plug. What was confusing was the information originally supplied by Neff customer service who said it HAD to be hardwired. And yet when I called them today they said it's absolutely fine.
Yes yes, I know, goes back to the point that I should follow the manual and nothing else. Ok, I get it. The point is, it's safe and meets the manufacturers requirements. Shame I couldn't get the manual before. I still can't find it electrocnically from that product code. Anyway Specifically here is the text:

"Connecting the appliance to the power supply -
Power cord: Type H05 V V-F or a higher rating. The yellowgreen
wire for the safety earth terminal must be 10 mm longer on the
appliance side than the other wires.
In the installation, there must be an all-pin isolating switch with at
least 3 mm contact gap, or the appliance must be connected
using a plug with an earthing contact. This must remain
accessible after installation."

Cheers for all the replies.