Can the new electric oven, gas hob and extractor run on the same supply via a 15mm cable from the fuse box 32amp breaker to a switch on the wall? the oven needs 13amps 3amps for both the hob and extractor.[/img][/list]
Seems to be ample supply current for your demand.
How do you know what the cable sizing is?
15mm is not a standard size and unusual to find 16mm cable installed in a domestic system
Standard cables for an oven, depending on output would be 4,6,10mm.
32A would be suitable to protect the above cables sizes.
But I think more detailed information will be needed, normally would suggest installing socket outlet for oven(13A), then down fusing the circuit using FCUs for hob ingnition and extractor, but you will struggle to terminate anything like 15mm cable into a socket outlet plate with the addition of the spur cable for hob/extractor.
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