Abstract: A display case is provided having vertical members with internal conductors. The conductors are coupled to a source of low voltage electrical power such that adjacent vertical members are of differing electrical polarity. Shelf supports are designed to make electrical contact with the internal conductors when engaged in a vertical member. A light fixture, disposed on the underside of a shelf is electrically coupled to the shelf supports thereby completing an electrical circuit for energizing the light fixture.

Abstract: A modular furniture system is provided having vertical standards with internal conductors. The conductors are coupled to a source of low voltage electrical power such that adjacent vertical standards are of differing electrical polarity. Brackets for use in the modular furniture system are designed to make electrical contact with the internal conductors when a bracket is engaged in a vertical standard. An electrical device, such as a light fixture, is coupled between a pair of brackets engaged with adjacent vertical standards, thus, energizing the electrical device. Alternative embodiments are provided for use in merchandising displays and office partition systems.