1.5mm clipped to ceiling supplied on 20A breaker

[DaveS]

Morning fellas

On job at moment. Am just looking at lighting circuits. They are supplied off 20A type C breakers run in 2.5mm to MDB's then from there each lighting circuit goes down to 1.5mm flex 5 core with 2 cores being used for dali. From what I see cable rating is 20A is a 20A breaker to high for this circuit? Thanks

 

[DaveS]

The flexes supply multiply fittings. They are wired into modular type Tee's so the single pendent 0.75 cpc doesn't apply

 

[hightower]

The flexes supply multiply fittings. They are wired into modular type Tee's so the single pendent 0.75 cpc doesn't apply

So it's not one flex per fitting, but a series arrangement of multiple fittings?