In article ,
"Morgans" wrote:

"Lew Hodgett" wrote

Close to 100 posts, most totally crap.

IES recommendations for a machine shop/wood shop call for 100 foot
candles maintained.

Using 2 lamp fixtures, approximately 19 fixtures are required for 100 FC
maintained.

I agree with the point that it is tough to get enough light for a shop.

I would say that he should check out the high output 8 foot fixtures,
though. It is amazing how much light they put out. It may be more
economical to go that way.

For a low ceiling, HO fixtures are dubious - hard to get the light
evenly distributed if there's only 5 feet or so between the fixture and
the bench-height. At about 10 feet and up they make more sense (but
stick with low bay fixtures until you get to 16 feet or more). For any
ceiling, 8 foot bulbs are a pain to transport, have shipped, etc. .vs. 4
foot bulbs, and don't offer much, if any, improvement in efficiency. You
can get a boat-load of light in a high-output 4 foot fixture, and get
bulbs shipped UPS...

--
Cats, coffee, chocolate...vices to live by