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 ...

Lighting can be a large part of any building's electrical load — 30% or more if it is heated by non-electrical means. As an energy cost-cutting measure, consider upgrading your lamps from incandescent ...