Mark wrote:

Hi I don't mean ON a mains circuit i mean on its own but LIKE a ring
circuit

I appreciate you mean "like a ring", however the answer is still no.

A single run of 1mm sq csa T&E is good for 12A even if burried in
insulation in a wall. So it will already cope with double the typical
MCB size you will use for a lighting circuit.

Your 600W of lighting still leaves another 800W of headroom on a
standard 6A MCB, or enough capacity for another 8 standard light fittings.

--
Cheers,

John.

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