Well, the jury is in. We installed 9 ballasts today on one job, checking for RFI before and after.This job was replacing old magnetic ballasts and T12 lamps for electronic ballasts (residential grade) and T8 Lamps. No RFI noted before or after.
Second job of the day, replace two commercial grade electronic ballast with two new residential grade ballasts. RFI before the change was unbearable on the radio. RFI was nonexistent after the change.
So i guess the rule of the day is ,if your going to install flourescent fixtures in a residence, make sure you specify residential grade ballasts in your fixtures.
Dave