There's obviously no electrical difference between those two alternatives. Is there something which makes you think that they wouldn't be suitable-and, if so, what other alternative did you have in mind?
To be honest with you John, I struggle with amp ratings and cable sizes. Haven’t got my head around this yet.
As is so often said, in theory the protective device (MCB, RCBO, fuse or whatever) is only there to protect the cables, not the connected equipment (which should have internal fuses if it is felt they are need to 'protect' it) - and you would probably struggle to find any credible cable not rated for at least 6A.
0.5mm² flex?
I imagine it’s way too technical for a DIY’er like me? I think I am after a table that has things like cable, breaker size based on load?
Which bit of information about this chime informs me that I need a 6amp circuit?
It is not technical. It is produced by the people who write the regulations as an easy guide. It’s the place for you to get a lot of the information that you have been asking here.
That's true. However, I thought (perhaps wrongly_) that the OP was talking about 'fixed wiring', with non-flexible cable, in which case, as you know, the minimum permitted size (for cable with solid conductors) would be 1 mm².
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