If a lighting ballast fails, do you change it out hot? That's a fairly common practice, but you can get electrocuted by 277V just as surely as from a higher voltage. If you're on a ladder, the fall ...

Editor’s note: Traditional magnetic ballasts that we all know so well are slowly being phased out. The older magnetic designs are not so efficient and electronic versions increase reliability while ...

Actually two ballasts failed. These are from Advance Transformer Company and I really don’t think it is their fault. Heck it might be my fault since I see that there are different colored wires that ...