Lets say the cable catches fire due to high resistance/poor isolation (used at 40-50C or close to oven exhaust, causing thermal runaway) - is it broken? In that

Lets say the cable catches fire due to high resistance/poor isolation (used at 40-50C or close to oven exhaust, causing thermal runaway) - is it broken? In that regard you can use a lamp cable to connect an oven - it will totally work for 5seconds, it might burn down later, though.