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Why isn't twin and earth cables used in commercial?

Former Community Member
Former Community Member

I was always taught that twin and earth cables should be used in domestic only and singles/multicore in commercial? 

Why is that ? I mean there isn't anything wrong with using 1.5mm2 twin and earth with 1.0mm2 CPC for lighting circuits.

Regards,

J

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    However, back in the real world, if you're meeting disconnection times, or with the circuit lengths shown in Table 7.1(i) of OSG, we know the actual let-through energy will be much lower …

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    However, back in the real world, if you're meeting disconnection times, or with the circuit lengths shown in Table 7.1(i) of OSG, we know the actual let-through energy will be much lower …

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