|
Jerry, That sounds like it's going to be a great shop! I just built a 24'x 32' building with ceilings about 9' 3", also insulated and sheetrocked. I hung four 8' HO cold start (this is central NY) fixtures, each with two 110 watt tubes, from short chains so that they are about 8.5 feet above the floor and still have room for air to circulate above. They provide plenty of illumination for my purposes, but that experience taught me that if I were lighting a building like yours, I would keep the fixtures out about 4 feet from the walls (especailly where you will have work benches), and then run the others in parallel rows not more than perhaps 10 feet apart. In your 40' x 70' building, that would mean running four rows of 8 fixtures per row going lengthwise of the shop. Or, since your overhead doors are on a long side, you may want to run 7 rows of 4 fixtures per row going the shorter direction. You will obviously need to run several circuits to accommodate all of those lights, so carefully thoughtout switching will let you turn on just those that you need when you are working in just one area, or are just walking in to find a hammer to take to the house. BTW, don't forget to put a few receptacles in the ceiling so you can hang 2 or 3 retractable trouble lights, or a power cord. Good luck with your new shop! Tom
|
