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LED lamp startup currents and MCB/RCBO

psychicwarrior

Hello forum , good day to all

Accepting it can be a bit more involved science wise, but will any of you please share [if you use/have] a general/simple ‘formula’ or 'rule of thumb'  for working out how many LED lamps that a MCB/RCBO Type B or C of some rating is able to switch and not end up nuisance tripping on same-time startup  ?

 

Regards

Habs

 

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    For one or two lighting circuits in homes or similar sized premises I would urge not “over thinking” the problem but simply allowing a generous margin.

    It is probable that a fair proportion of the lighting points will accept E27 lamps, B22, GU10 or other popular types, and it is almost certain that the occupier will replace failed lamps with alternatives of different characteristics. Replacement of complete light fittings with different types is likely.

     

    In the case of large installations with many similar lighting circuits such as a factory or an office block then a bit more detailed planning is worthwhile. Including seeking the suppliers advice.

    In the home, one trip per annum of the lighting circuit might be acceptable under some seldom occurring adverse circumstance.

    In a large building with several hundred lighting circuits, then an average of one trip a day is unlikely to be acceptable. 

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  • 0

    For one or two lighting circuits in homes or similar sized premises I would urge not “over thinking” the problem but simply allowing a generous margin.

    It is probable that a fair proportion of the lighting points will accept E27 lamps, B22, GU10 or other popular types, and it is almost certain that the occupier will replace failed lamps with alternatives of different characteristics. Replacement of complete light fittings with different types is likely.

     

    In the case of large installations with many similar lighting circuits such as a factory or an office block then a bit more detailed planning is worthwhile. Including seeking the suppliers advice.

    In the home, one trip per annum of the lighting circuit might be acceptable under some seldom occurring adverse circumstance.

    In a large building with several hundred lighting circuits, then an average of one trip a day is unlikely to be acceptable. 

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