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For my shop 30W x 60L x 14H here is what I am doing. I have brought 200amp service to the shop in 42 circuit panel. Bigger panel was selected for expansion if ever needed (bought it from electrical contractor during house construction). I have lighting outlets every 10 ft. on center set out from the wall about 6 ft. I have also have one overhead outlet for every 100 sq ft. (ceiling fan or drop cord) I am using 4 bulb flourecent fixtures I scrounged from the dump. For each row of lights I am installing 3-way switch switches at each entrance to prevent back tracking and improve efficiency. For bench work I am installaing 2 outlets with a wall control switch. Right now the bench lighting will be incandescent with hopes to replace this with 150W reflector bulbs later. These lights will be about 4 ft. above the bench. Outside lighting is mercury vapor with dusk-dawn controls (Lowes Store) on front and back entrances. Sides will be covered with motion sensor flood lights (Lowes store) to come on when parking equipment and to be a deterrent. General use outlets are 20amp duplex spaced every 4 ft. of wall space (overkill for sure). In case I reconfigure things (move the fridge) I don't want to run out of outlets. I have one GFCI outlet for each wall. I have also dedicated one outlet for each tool less than 1/2 hp. Special purpose outlets are planned (but not yet installed) for tools 1/2 hp or bigger. Both the general use and special purpose outlets will be on branch circuits to serve no more than three 1/3 hp motors, two 1/2 hp mor or 1hp or bigger. I also have plans for four 50 amp 2 wire with ground outlets for my ancient DC welder (Lincoln DC 250-MK Aircraft) and my air compressor. One of the welder outlets is going to be placed just inside the main roll up door so I can repair equipment outside without having to remove implements etc. Heating is really not a concern in my area (N. FL) as it does not get bone-chilling cold here but the overhead outlets will provide ceiling fan cooling in the warmer months. One thing I did not see mentioned was painting for reflectance. When done my shop walls will be painted with a light matte off-white color and ceiling will be painted ceiling white. This is to improve lighting effeciency. This is something that can be done by all of us and cost is just paint. No code constraints that I am aware of :) When I am done it should be rather nice place to work. This project has been a work in progress for nearly 2 yrs. I am now about 2/3 complete. The above is my PLAN so when finished I do not have to come back and rewire, add etc. Once it is done it is DONE (or so I hope). FWIW
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