broadgage:
As an extreme but illustrative example consider a circuit wired in 2.5mm SWA without any de-rating for grouping etc, and protected by a 20 amp fuse. If the cable was long enough, the fuse might never operate on a phase to neutral short circuit. But would the cable be damaged? I suspect not.
In most real world cases voltage drop would be a problem first.
broadgage:
As an extreme but illustrative example consider a circuit wired in 2.5mm SWA without any de-rating for grouping etc, and protected by a 20 amp fuse. If the cable was long enough, the fuse might never operate on a phase to neutral short circuit. But would the cable be damaged? I suspect not.
In most real world cases voltage drop would be a problem first.
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