looking at building a 40x80 16ft high garage/workshop. Looking for recommendations for lighting. Links to good sites would help to.
there are so many different options out there at this time, depending on the use of the shop. Stay away from the T-12 lamps, as there being phased out.
8 foot T8 tandem lights work nice, have electronic ballast and cost aprox $60/each including lamps. Personally if i used these id install at (absolute minimum) least 2 in every bay the length of the building and switch each side separately. with 12 total light fixtures youd have aprox 15 FC of lighting (on average). not too bright, but acceptable for most homeowner uses.
to double the foot candle , youd need 3 rows of 8 lights ... that would give you an average of 30 FC. this would use 24 x 140 watts ea = 3,360 watts
Another option is using the new T5 High Output lights. Each fixture uses four 54 watt T-5 lamps, for a 248 watt total per fixture. For 30 FC of lighting you would need 3 rows of 4 light fixtures. These fixtures run aprox $98 each incl lamps. these would use 12 x 248 watts = 2,960 watts/hr
you can also use high bay 400 watt lamps, but i personally hate these fixtures, because they take so long to go fully bright, they lose brightness as the lamps age, and you tend to get more shadows. To get 30 FC of lighting, you would also need to run 3 rows of 4 lights for a total mounting of 12 fixtures. the high bays would use 12 x 400 watts = 4,800 watts/hr