I was wondering if anyone has heard the rumor that once you use a multivolt ballast on one voltage it "locks on" to that voltage and can't be used on any other voltages. It has become a controversial subject here at the shop. The main reason for it is to temp the lights in on 120V while working and then go back to the 277V for the permanent installation. I was just wondering what other people have heard. I figure if that isn't ok, then there would be a large warning sticker on the ballast saying so.
