Lectrician
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Red Live, Blue Neutral, Yellow Earth.
Always better to use a 3 core, although a 2 core can be used with the armour as an earth.
Depends on the size, current drawn, length of run etc to determine the Zs of the circuit to say 100% if using the armour is sufficient. Best to stick to 3core really, but ensure you still earth the armour
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