On 24/11/2020 23:52, Lobster wrote:

What's the deal these days with installing a new oven? Im looking

Much the same as its always been...

at replacement built-in ovens on www.AO.com. My understanding was
that ovens either come with a 13A plug attached, in which case you
can simply plug them into an ordinary socket; or they need to be
hardwired into a suitable existing oven circuit, usually when they
are higher current drawers.

Yup

But looking at the dropdown options, I see the following:

1. Comes with plug attached, no electrician required 2. Requires
plug/cable attaching by an electrician 3. Needs hardwiring by an
electrician

So whats option 2 all about please?!

Perhaps they are assuming that if confronted with anything more
complicated that a pre terminated plug on a lead the user will be lost.

(possibly true for the generation they grew up not having to fit a plug
to every sodding thing you bought!)

The second thing is that (apparently!) I have to install 2 single
electric ovens side by side. I have a cooker circuit in the kitchen;
is it ok to fit two hardwired ovens to this? How about one hardwired
oven plus one with a 13A plug (eg can I add a 13A socket to the
cooker circuit?)

Any combination is possible - but you will need to take into account the
makers instructions, and the max current requirement of the oven, as
well as the fault protection requirements of the oven's flex if its a
pre fitted one.

So for example you have a 32A radial, and two 2.2kW ovens with plug
attached flex, then a double socket or pair of single sockets on the
radial would be fine. (I would keep the total load on a double socket to
under 20A though)

If the ovens expect you to fit a flex, then get some 2.5mm^2 high temp
flex, and you can hardwire both to the radial unless the makers
instruction insist on lower fusing. If you can't fit that size flex in,
then 1.5mm^2 HT flex to a pair of FCUs would be ok.

(note that an isolator for the supply to both that is within easy reach
of the user is good)



--
Cheers,

John.

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