Advice on fluorescent lighting

Discussions about commercial and domestic lighting fittings and fixtures (not streetlighting).
Ash
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Re: Advice on fluorescent lighting

Postby Ash » Wed Oct 24, 2012 6:25 pm

Hey and Wellcome !

The fixtures existing currently are up to 6ft T8 (Switch Start and electronic) and 4.7ft T5 (electronic)

If you are lucky to get a used old fixture then you also have the options of 8ft T12 (Switch Start) as well as some 4-6ft T12 (Switch Start and SRS). but lamps for those are obsolete and you will possibly have hard time to find a lamp, even harder to find a replacement lamp several years further from now. (Well, you can use T8 lamps which will stay available in T12 Switch Start fixtures but not in SRS and there is not going to be an available lamp for 8ft)



I'd suggest to use modern T8 lamps and a somewhat deviant fixture choice :

Get a louvered troffer strip (as used for office spaces etc but one meant to be installed on a plain ceiling - not a recessed for grid ceilings) of 1x or at most 2x T8 lamps. And install it on the wall with the _side_ attached to the wall

Outside it is just a white box with metallic louver bottom Can even use it as a shelf.....

When lighting it emits a lot of light straight down, lightwashing the wall and whats below (table ? countertop ?) but the fixture itself does not emit glare at all (other than the brightly lit wall)

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LinearSLI-H
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Re: Advice on fluorescent lighting

Postby LinearSLI-H » Wed Oct 24, 2012 7:10 pm

Battens will look a bit odd here, and they will collect dust, I would wall mount 2 38watt round/white 2D, with 840 lamps in.
Both fixtures running will give you a total of 5700 lumens, (slightly under what a 6 foot single batten would), but the 2D will be better to keep clean, and look good too.
Wholesale is the way for fixtures, (don`t get ripped off at DIY stores)!, do you have a local `Electric Center`?, as they will have either Thorn or Fern-Howard ones, I prefer Fern-Howards and have 2, 16watt 2D in my kitchen.
FEED THE MOOMIN!!

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Kev
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Re: Advice on fluorescent lighting

Postby Kev » Wed Oct 24, 2012 7:59 pm

Personally I think 2 x 3' single switch start battens with angle reflectors Philips master 840 tubes and pulse starters would be a perfect choice! Also you will have less effect with the fluorescent than the halogens with the old heat detector!! The coughtrie 2Ds are VERY expensive!

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MetalHalideHater
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Re: Advice on fluorescent lighting

Postby MetalHalideHater » Wed Oct 24, 2012 8:06 pm

@Kev - yeah - arrowslims or a similar batten would be awesome, shame there's no decent ones around nowadays.

Ash
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Re: Advice on fluorescent lighting

Postby Ash » Wed Oct 24, 2012 8:33 pm

There are "side reflector boxes" meant for installation above whiteboards in schools etc - T8 and today probably T5 exist too. Can flip the reflector in them to make the light go in the room instead

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LinearSLI-H
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Re: Advice on fluorescent lighting

Postby LinearSLI-H » Sun Nov 11, 2012 7:11 pm

Looking good :D
FEED THE MOOMIN!!

Dave
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Re: Advice on fluorescent lighting

Postby Dave » Sun Nov 11, 2012 10:36 pm

ohhhhh... a Coughtrie Hexagon. Nice choice, should last for years if its switch start.

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Zelandeth
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Re: Advice on fluorescent lighting

Postby Zelandeth » Wed Nov 28, 2012 10:56 pm

Good choice indeed. Discovered these fittings a few days ago and have been trying to come up with an excuse to get one now.

That got the opal of prismatic diffuser on it?

Nice to see the Coughtrie still have a pretty good range of bulkheads, even though they ain't cheap.

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Paul
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Re: Advice on fluorescent lighting

Postby Paul » Thu Nov 29, 2012 12:56 am

Nice solution!


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