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Local Battery Emergency Lighting Suitability

me1899
Hi All, hope all well


Got a query on em lighting.


Got a 16m high new build storage racking warehouse where I am proposing central battery emergency lighting.


2 units, fire rated feeds to busbars (the busbar system and associated plug in lights being certified as acceptable to use internal conductors for the emergency feeds as opposed to separate cabling to every luminaire).


Someone is now suggesting to go local batteries - 124 of them which I think is bonkers mounted at 16.5m.


Is there a reg to throw back at them in addition to the obvious comments on maintenance, effect of elevated ambient temperature up there (lots of rooflights present)?



Parents
  • 0
    I agree, 124 batteries seems bonkers.


    Any chance of a cheaper cabling system than busbar? Is MICC still used? Would fire rated cable tucked into the web of the roof beams be secure?


    If I remember correctly, Em lighting is required to come on in the event of failure of the local circuit not just for an overall supply failure but this can still be arranged with a couple of central batteries and one NC contactor for each lighting circuit.
Reply
  • 0
    I agree, 124 batteries seems bonkers.


    Any chance of a cheaper cabling system than busbar? Is MICC still used? Would fire rated cable tucked into the web of the roof beams be secure?


    If I remember correctly, Em lighting is required to come on in the event of failure of the local circuit not just for an overall supply failure but this can still be arranged with a couple of central batteries and one NC contactor for each lighting circuit.
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