I was looking for some traditional-shaped bulbs and was sold these. They are labelled 'for industrial use only' and it actually says 'rough service lamps' on the packet. So how are they different from ordinary ones? The bloke in the shop reckons they're fine to use at home.
Rough Service Lamps
- Thread starter Vicario
- Start date
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Ah, the law of unindented consequences strikes again...
This is to do with the EU phasing out GLS (general lighting service) incandescent lamps as a green measure, as you have found out, there are get outs for incandesscent lamps for other purposes.
The rough service ones are designed for inspection lamps, lmaps mounted close to machinery, etc, anywhere where they might be subject to vibration. They are more resistant to vibration due to a thicker filament which runs cooler, which in turn means that for a stated wattage you get less lumens per watt, therefore they less efficent than standard types and therefore you might need to go up a size 100w where a 60w GLS was suited, or put up with poor lighting levels. Therefore they are not a drop in replacement.
Theres some irony in there somewhere....
What you should be using is the replacement ones that are a halogen capule inside a standard shaped glass envelope. A 60w is replaced by a 42w halogen. They are more expensive (£2 each in the supermarket... £1 + vat at a wholesaler, £3 at argos
) and dimming them will shorten the lifespan (note the manufacturer says they can be dimmed, that is true, but they make no mention of effects on lifespan which I understand is an inherrant issue with all halogen lamps)
http://www.argos.co.uk/static/Produ...2033665|rnd:7670561281618165048|dvc:c|adp:1o6
This is to do with the EU phasing out GLS (general lighting service) incandescent lamps as a green measure, as you have found out, there are get outs for incandesscent lamps for other purposes.
The rough service ones are designed for inspection lamps, lmaps mounted close to machinery, etc, anywhere where they might be subject to vibration. They are more resistant to vibration due to a thicker filament which runs cooler, which in turn means that for a stated wattage you get less lumens per watt, therefore they less efficent than standard types and therefore you might need to go up a size 100w where a 60w GLS was suited, or put up with poor lighting levels. Therefore they are not a drop in replacement.
Theres some irony in there somewhere....
What you should be using is the replacement ones that are a halogen capule inside a standard shaped glass envelope. A 60w is replaced by a 42w halogen. They are more expensive (£2 each in the supermarket... £1 + vat at a wholesaler, £3 at argos
) and dimming them will shorten the lifespan (note the manufacturer says they can be dimmed, that is true, but they make no mention of effects on lifespan which I understand is an inherrant issue with all halogen lamps)http://www.argos.co.uk/static/Produ...2033665|rnd:7670561281618165048|dvc:c|adp:1o6
They are perfect for home use if you want a decent light and don't mind a few pennies on the elec bill.
Interesting about halogen not liking being dimmed.
Interesting about halogen not liking being dimmed.
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I would say that they are not suitable for domestic use.
Fittings have a maximum figure of heat dissipation based on the rating of "standard" lamps. RS lamps produce significantly more heat so could overheat the fitting.
Frank
It is always a good idea to use a lamp less than the maximum rated for the holder. Some "economic" holders fail with the rated lamps fitted.
There are plenty of 'old fashioned normal light bulbs' available on the likes of Amazon if you would like to do your bit for the planet by not flying abroad needlessly rather than buying a few expensive lamps.
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