> > Is it reasonable to assume that the existing PAR38 lamps are 2400
> > lumens?  (Wikipedia suggests incandescent is 16 lumens per watt).
>=20
> Better manufacturers include Lumen data for their lamps (even the
> incandescents.) Most of the PAR38 150W bulbs I see are significantly less
> than 2400 lumens.
>=20
> Can you replace your fixtures with twice as many smaller ones?  150-W-
> equivalent LEDs seem to be pretty rare (and ... power dissipation issues!=
), but
> "75W equiv" bulbs are common (in the US, anyway.)

I came across this link to an 1100 lumen LED lamp recently (UK site) ...
http://www.homewatt.co.uk/daylight-white/484-astralumen-a-series-15w-b22-da=
ylight-white.html

particular one linked to is a bayonet cap, but others are available.

It is an interesting discussion for me as well, as our assembly facility is=
 having an audit, and while currently what one would regard as well lit by =
fluorescent tube fittings, the auditor reckoned we were only about half the=
 lumens he reckons we should have. He wants us to have 1000 lumens for work=
ing at the assembly and inspection benches.

--=20
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