Oven/Hob Wiring

Dan12 · 13 Feb 2019

Hi, I was looking into getting an induction hob to replace the current ceramic one that is very cheap and doesn’t heat well.

I pulled out the oven to see what kind of setup was going on with the wiring and found that the oven is wired into the back of the hob (pic attached). I’ve swapped out an oven before and it was just a case of wiring it into the cooker connection unit, except that this place doesn’t have that and the wire from the CU is just coming out of the wall.

Is it safe to wire the oven into the new hob the way it currently is? If so then I could just wire in the new hob like for like. Or would I be better getting an electrician in to sort out a cooker connection unit?

Taylortwocities · 13 Feb 2019

Is the circuit a dedicated circuit?
What size cable is running from the CU?
WhaT is the value of the protective device in the CU?
What are the power requirements of the oven and the new hob?

Dan12 · 13 Feb 2019

10mm from the CU on a dedicated 32amp circuit. (With isolating switch on the wall beside oven)

Oven is 2.2kw
Hob I haven’t got yet but any I’ve been looking at are around the 3kw mark.

ericmark · 14 Feb 2019

Only you know if you have the skill or not, and as an electrician I find it hard to understand the problems which non electricians face.

However I would advise if you change to an induction hob make sure it has knobs on and not touch control, the first we fitted had knobs and it was really good, as a pan started to boil over simple turning knob and immediately it stopped boiling, then fitted one for mother with touch controls, a real problem, to turn off you selected the heat area, then tapped the down button but is simply took to long, also with her in a wheel chair she was too low to see the the LED legend. Learn from my mistake.

Simon35 · 14 Feb 2019

Dan12 said:
Hi, I was looking into getting an induction hob to replace the current ceramic one that is very cheap and doesn’t heat well.

I pulled out the oven to see what kind of setup was going on with the wiring and found that the oven is wired into the back of the hob (pic attached). I’ve swapped out an oven before and it was just a case of wiring it into the cooker connection unit, except that this place doesn’t have that and the wire from the CU is just coming out of the wall.

Is it safe to wire the oven into the new hob the way it currently is? If so then I could just wire in the new hob like for like. Or would I be better getting an electrician in to sort out a cooker connection unit?

Although it might look and feel a bit ratty, there's probably not a great deal wrong with it, if anything at all.

If the cable and protective device are adequately sized, no problems there.

I would want to take a look at how the two cables are terminated in the existing hob, one's fairly large, the other to the oven, probably not, and are there additional terminals in the hob for looping out.

That's the existing. You need to confirm the same on any new appliances.

Taylortwocities · 14 Feb 2019

As Simon says, the supply would appear to be adequate for the hob+oven, but connections to the hob will only be meant for one set of cables. Given the high currents involved, trying to "loop in" has hazards.

The wall looks like a plasterboard stud wall. Do the job properly, fit a single deep box in the wall

and a dual appliance plate,

this allows the oven and the hob to be separately and securely connected

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Oven/Hob Wiring

Dan12

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