Hello all. Hope all is well out there! Supply house is currently bidding fixtures on a lighting upgrade project which will require replacing 333-400W High-Bay Metal Halides(assuming Probe Start) with 333-6 lamp T8 Fluorescent(instant start) High-Bay fixtures. Going from roughly 450W to 224W a fixture. My concern is harmonic currents introduced to factory power system with upgrade. Motors on machines are 480V 3Ph. No specs on number of VFD or what kind if any. Lights are all 277V. Would harmonics increase or decrease in this possible situation? Half of these fixtures burn 24/7. Harmonic currents are not my specialty, by any means, but issue should be addressed before I bid labor on this project.
