View Full Version : Metal Halide floodlights


RRH
04 December 2006, 22:23
I bought a couple of SON floods a while back and while they give a reasonable light output I'd rather have a whiter light.

There seem to be several different wattages available, but how do these compare to a typical halogen flood?

Any help would be greatly appreciated.

alcazar
05 December 2006, 10:19
How powerful do they have to be? I've got three of the new 38W fluorescent floodlights at my French property. They give a good white light, are cheap to run, but obviously, aren't a patch on 500W or 1000W halogens.

What about those newer ones, as used in footy ground floodlights, I think they must be HIDs?

Alcazar

John@TunerUK
05 December 2006, 13:32
Metal halide is your friend. They're more expensive than SON, but the light is much nicer:thumb:

tonybooth
06 December 2006, 16:18
Hi mate

Yes metal halide all the way. Target prices :)

250 Watt, metal halide floodlight, inc. photocell and wall bracket £85.00 + VAT each
400 Watt, metal halide floodlight, inc. photocell and wall bracket £95.00 + VAT each

HTH

Tony

RRH
06 December 2006, 17:10
Thats great Tony- not sure what power to go for though- how do 250 / 400s compare with the light output from a 500 watt halogen? Appreciate its difficult to be accurate, a guisstimate wil do.

Thanks,
Simon :)

tonybooth
06 December 2006, 17:21
I would say a 250 metal halide is equivalent to a 500 watt halogen although that is based on experience and not science ;)

TONY

RRH
06 December 2006, 17:26
Close enough for me :) Thanks Tony. Have pm'd you.

John@TunerUK
06 December 2006, 18:21
:thumb: agreed. Only difference is once you turn a metal halide off, you can;t turn it straight back on again. But if it's not to be used that way, they're excellent:)

StickyMicky
13 December 2006, 05:19
you can get a few different styles of colour for the metal halide lamps

a warmer yellow tinge or a more brighter blueish tinge.

i have 8 x 150 units up around the carpark at work and they are bright enough :)

the 70 watt versions that used to be up were a bit crap TBH
the 250watt versions i have (2 units) light up the inside of the carwash, they are quite bright :)

alistair
13 December 2006, 23:17
I would say a 250 metal halide is equivalent to a 500 watt halogen
I think they feel brighter than that, but it's a different kind of light, sort of softer and wider spread. I've got 2 of these (http://www.tlc-direct.co.uk/Products/TCMET70.html) 70w ones and they light up an area the same as a couple of 500w halogens.

The downside, as with sodium, is a slow warm up, but once they're going, they're great. Quite a blue light, so are great for lighting up the greens in the garden - much nicer than sodium IMHO.

John@TunerUK
14 December 2006, 12:25
Some example lumen outputs to show you how much more energy efficient they are:thumb:

150W Halogen flood 2,400 lumens
500w Halogen flood 10,500
100w Metal Halide 6,800 lumens
400w Metal halide 25,000 lumens


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