whata and when to use high bay lighting?

[zwitterman]

What is high bay lighting differnt than regular or low bay? When would you use high bay? Under 20 feet, under 10? My work shop is 10X20 with a 10 foot ceiling. Looking to get some lights? How many would be good?

 

[mrb]

high bay is for over 20ft. there is also low bay which is for use under 20ft, but with 10ft ceilings you should just be using T8 strips.

 

[zwitterman]

Thank you!

 

[nehog]

Also almost all HID (metal halide, sodium, mercury, etc.) lights are adjustable and cover a range of heights. I have 'high bay' lights in my shop, with an average ceiling height of about 14 ft, but by adjusting them to the very limit I get excellent coverage. Also the design and style (mine have glass reflectors, so shoot a lot of light up, which reflects off the white ceiling insulation) also effect lighting quality.

As MRB says, were this my shop, I'd just go with T8 lamps (which I have in addition to my HID lights).