I have in my shop two 8’ fluorescent light fixtures that have never seemed to work right ever since I installed them (metal shop building). I have never had all 4 bulbs burning at once. I can only get one bulb per light to burn and it’s not the same bulb every time. I have 12-2 wire running from a 20 amp breaker not only to burn the lights but also some wall sockets. They do this even when nothing else is running. I had heard that fluorescent lights don’t like the cold but they do this even in the summer. What could possibly be wrong? I thought maybe the ballasts but when the bulbs alternate burning, I give up. I have replaced the bulbs many times. On the side that burns the least on both fixtures that bulb will turn black on the ends rather quickly (within a month) any help would be appreciated.