I've seen one like that recently - from memory it was a Bosch one - and likewise it raised an eyebrow with me. My conclusion was that it was an appliance matter rather than a BS 7671 and anyway I had no information about the wires themselves - they could well be part of ELV control circuits rather than mains (the oven came with a demand for A-type RCDs so suggesting some electronics in there) and the (reputable) manufacturer probably knew what they were doing.
I've seen one like that recently - from memory it was a Bosch one - and likewise it raised an eyebrow with me. My conclusion was that it was an appliance matter rather than a BS 7671 and anyway I had no information about the wires themselves - they could well be part of ELV control circuits rather than mains (the oven came with a demand for A-type RCDs so suggesting some electronics in there) and the (reputable) manufacturer probably knew what they were doing.
