D
Darkwood
The more compact a lamp the higher the chance of a ionized path been created as the filament blows, hence a GLS was an occasional issue but the GU10 were a nuisance, but as i said before it dosn't always do it and nearly always happens when switching the lamp on, the bright flash you sometimes see is the ionized short which is many times brighter than the lamp itself but it only lasts a fraction of a second, if the lamp glows brighter than normal for quite a duration (seconds or minutes) then the tungsten coils have tangled lowering the filament resistance thus increasing the current but as it wasn't designed for this higher current it dosn't last long as it just overheats and pops but this wont a ionized path as it a slow melt.
The type rating of and mcb is the tolerance of inrush associated with inductive loads, and due to an ionized track been a short circuit and not an inductive inrush using the time/current curve charts wont be effective but because the ionized path collapses pretty much as soon as its created you may get the occasional benefit of fitting a type 'C' instead of a 'B' because the current rise can be limited because of the speed of the decay of the short circuit. Its variable as to current flow and time so really not reliable value to afford it in the design stage although if Zs is met it wouldn't do any harm to fit a 'C', they cost the same.
The type rating of and mcb is the tolerance of inrush associated with inductive loads, and due to an ionized track been a short circuit and not an inductive inrush using the time/current curve charts wont be effective but because the ionized path collapses pretty much as soon as its created you may get the occasional benefit of fitting a type 'C' instead of a 'B' because the current rise can be limited because of the speed of the decay of the short circuit. Its variable as to current flow and time so really not reliable value to afford it in the design stage although if Zs is met it wouldn't do any harm to fit a 'C', they cost the same.
