Household Electrical Lighting Question

[macabethiel]

A bit of a question for the Electricians amongs us. I have some E27 220/230V 60 W Tube bulbs and they keep blowing after a few hours use.

They are a screw in Tungsten filament tube bulb being used in a metal ceiling mounted lamp shade. The bulbs were rated at 3000 hours, 300Lm 60kWh /1000 h.

I am wondering if they are overheating because they are mounted vertically (rather than horizontally as the filament design would suggest) in a metal lamp shade where the upper third is shrouded by the neck of the lampshade. So far 3 bulbs have blown with only a few hours use so I do not think its a dud bulb.

 

[Lazy-Ferret]

Heat is the quickest killer of bulbs, that is why the large globe bulbs last so much longer than candle bulbs, so I think you are definitely barking up the right tree. Probably best to change over to LED bulbs.

 

[solarman216]

they can be mounted in any order, but usually screw to the top, if they are filament bulbs and you have tried several it suggests that the whole box full have had a rough time, try a different supplier, Rick

 

[terrano bob]

they can be mounted in any order, but usually screw to the top, if they are filament bulbs and you have tried several it suggests that the whole box full have had a rough time, try a different supplier, Rick

agree with rick on that one :thumbs

 

[macabethiel]

Overheating Bulbs - looks very likely.

Thanks guys going to try the Edison Long Tube Vintage type and drill a few holes in the top part of the shade to help heat disipation. Also different supplier. Need to be dimmable so I guess that rules out most LED types.

 

[solarman216]

ES bulbs, (screw type fitting) have always been a problem in the uk, they are popular abroad but bayonet is supreme in the UK I think it is because the ES fittings in the UK are trash, but only my observations, Rick

 

[Mobieus_uk]

you sure the bulbs you are using are suitable for a dimmer switch, you mentioned they must be dimmable so assuming you have a dimmer switch fitted maybe that is causing problems with surges