High zs on low bay lighting circuits

[Des 56]

Are the fittings fused internally

 

[Dannyg8810]

Are the fittings fused internally

Low bays usually have a fuse at the terminals so more than likely yes

 

[Des 56]

Low bays usually have a fuse at the terminals so more than likely yes

Asked only because of 559.6.1.6

 

[Toneyz]

From past experience it has been the inrush start current that has been the problem on higher wattage low bay fittings so it may be interesting to know how many fittings being switched on at one time on each MCB.It will also be interesting to know Zdb and r1 +r2 and how much any parallel path of say structural steel is playing. Installing a RCBO may be the answer .