I converted my shop to led from fluorescent.These are direct wire no ballast. Ran all new wires in conduit. The compressor is a 5hp single phase on a 60 amp breaker with 125amp main.
I replaced compressor motor in 09. Compressor I installed in 1977 and has never given me a problem with the lights. I can run the TIG on a/c high frequency with no flutter. Lathe, Milling machine, grinders nothing else has a effect on the lights. I went through every connection double checking neutrals and grounds in the whole shop with no faults.
My other led fixtures are pre assembled don’t have a problem and my standard non converted fluorescent fixtures are ok. I have read about harmonic balance in large compressors but have not found a cure. I have spent a couple of days just rechecking everything but I still have the problem. Can you help?