Combi-microwave 3400w - 3-core flex to Cooker Point ??

[martin2527]

Hi Everyone

My new combi-microwave 3400w has a 1.5mm flexi-cable. How should this be connected to a cooker point supplied by a 10mm cabled dedicated circuit (45 amp breaker)?

Can I use the normal cooker outlet plate to connect?

Thanks in advance.

Cheers

Martin

 

[plugwash]

What if anything does the manual for the combi microwave say about overcurrent protection?

Is there a socket on the cooker switch?

In general unless I had specific info from the manufacturer (in the manual or otherwise) saying it was ok I would not be happy connecting an appliance that small directly to a circuit with overcurrent protection that high.

 

[JohnD]

3400W is unusual.

It it a domestic model designed for the UK market?

 

[Taylortwocities]

I agree, usually 3.6KW and run off a dedicated 16A radial circuit.


The instructions are a wonderful thing. You could reveal the maker and model if there's nothing specific written.

 

[martin2527]

Thanks for replies the model is AEG MCC3880E-m . My old microwave used a 13a fused spur - dont know the rating - now at the tip!

I assumed that this spur was no good and I would need somehow to use the standard cooker connection that has no 13amp socket but would a 13amp socket provide a solution (Plugwash)? The existing cooker socket (45 amp) already has 6.4kw hob connected.

Running a dedicated circuit would be difficult - no spare CU slots, kitchen almost complete etc..(Taylortwocities)

How should the microwave circuit be protected if run from the existing cooker point?

The instructions if you can call them that:

The oven is equipped with a power cable and plug for single phase current.

There is no plug on cable!!!

The only other information is :

Warning: the oven must be earthed and if permanently connected should be connected to an all-pole circuit breaker with a minimum seperation of 3mm.

In the technical spec it has:

Power required: 3400w
Grill Power : 1500w
Hot air power: 1500w
Microwave output: 1000w

Have added picture of how I would like it wired. Can anyone point out problems.

//www.diynot.com/network/martin2527/albums/1263/6961

Cheers

Martin

 

[bongos]

Is it this one?

 

[sijaysee]

bascally you need a 16 amp mcb and you can run a 4mm t & e cable to a 20 amp DP switch.
it may be a pain to have to do this but its the correct way

 

[GaryMo]

bascally you need a 16 amp mcb and you can run a 4mm t & e cable to a 20 amp DP switch.
it may be a pain to have to do this but its the correct way

Correct way to use 4mm? On what basis?
An installation method wasn't mentioned, nor was thermal insulation.

 

[securespark]

Is it possible to re-jig the circuit a bit? Is the cooker feed 10mm²? Can the cable supply 45A given the installation conditions?

You could fit a 2 way CU on the end of the cooker feed then run a 32A circuit from this for the hob & a 16A one for the Mic.

Your total load would be around 42.5A.

 

[sjwkmje]

Warning: the oven must be earthed and if permanently connected should be connected to an all-pole circuit breaker with a minimum seperation of 3mm.

Reading this I think it means a double pole MCB. Is the cooker feed 10mm²? Can the cable supply 45A given the installation conditions? Is the cable enclosed in any thermal insulation etc.

You could fit a 4 way CU on the end of the cooker feed then run a 32A circuit from this for the hob and a 16A double pole MCB for the microwave. I would run the 16A MCB to a 20A switch above the worktop then to a flex outlet plate.

 

[JohnD]

Reading this I think it means a double pole MCB.

It usually means a DP switch.

 

[ban-all-sheds]

Or, of course, in the country where the product designers live most people would simply unplug the 16A rated Schuko plug which connects the appliance via 16A rated 1.5mm² flex to one of the 16A radial circuits which everybody in that country has....

 

[martin2527]

Thanks for all the replies and suggestions.

Will be going the 4-way CU route.

Cheers

Martin

 

[TicklyT]

Or, of course, in the country where the product designers live most people would simply unplug the 16A rated Schuko plug which connects the appliance via 16A rated 1.5mm² flex to one of the 16A radial circuits which everybody in that country has....

Why couldn't a 16 Amp radial circuit be installed in that manner in this country, using, say, ceeform plugs?

I imagine Schuko plugs would not be acceptable as they have the limitation of no polarization, so they could be connected either way round.

 

[ban-all-sheds]

Why couldn't a 16 Amp radial circuit be installed in that manner in this country, using, say, ceeform plugs?

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