Lighting system
First Claim
1. A system for lighting a floor area in a building comprising, in combination, a plurality of lighting fixtures supported by a ceiling structure to supply light to the floor area, each fixture having mounted thereon a plurality of lamps, at least one lighting circuit for energizing said lamps and a plural terminal first connector having terminal means wired to supply power to said lighting circuit, said fixtures being arranged into at least one branch circuit with a plurality of said fixtures in such branch circuit, a plurality of plural conductor branch circuit cable means, one branch circuit cable means connecting a plurality of circuits between each two adjacent fixtures in a branch circuit to distribute power to said fixtures, each branch circuit cable means having an end terminating in a second connector having first and second terminal means each connected to said plurality of conductors and an end terminating in a third connector having terminal means connected to said plurality of conductors, said first terminal means on a second connector on a cable means and said terminal means on a first connector on a fixture cooperating for connecting at least two of said conductors in such cable means to the lighting circuit in such fixture when such second and first connectors are connected together, said second terminal means on a second connector on a cable means and said terminal means on a third connector on another cable means cooperating for interconnecting corresponding conductors in such cable means when such second and third connectors are connected together, and means for applying electrical power between at least two of the cable conductors in each branch circuit.
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Accused Products
Abstract
An improved system for lighting a floor area in a building. A plurality of lighting fixtures mounted in a ceiling structure for lighting the floor area are connected in one or more branch circuits. Each branch circuit is defined by a plurality of plural conductor branch circuit cables which distribute power to the fixtures. Each cable connects in series or parallel to both the next cable and the next fixture in the branch circuit. Circuit connections are easily modified for changing power distribution and switching needs by selective insertion of adapters between two series connected cables or between a cable and a connected fixture. Adapters provide for switching circuits and for converting circuit connections.
294 Citations
15 Claims
- 1. A system for lighting a floor area in a building comprising, in combination, a plurality of lighting fixtures supported by a ceiling structure to supply light to the floor area, each fixture having mounted thereon a plurality of lamps, at least one lighting circuit for energizing said lamps and a plural terminal first connector having terminal means wired to supply power to said lighting circuit, said fixtures being arranged into at least one branch circuit with a plurality of said fixtures in such branch circuit, a plurality of plural conductor branch circuit cable means, one branch circuit cable means connecting a plurality of circuits between each two adjacent fixtures in a branch circuit to distribute power to said fixtures, each branch circuit cable means having an end terminating in a second connector having first and second terminal means each connected to said plurality of conductors and an end terminating in a third connector having terminal means connected to said plurality of conductors, said first terminal means on a second connector on a cable means and said terminal means on a first connector on a fixture cooperating for connecting at least two of said conductors in such cable means to the lighting circuit in such fixture when such second and first connectors are connected together, said second terminal means on a second connector on a cable means and said terminal means on a third connector on another cable means cooperating for interconnecting corresponding conductors in such cable means when such second and third connectors are connected together, and means for applying electrical power between at least two of the cable conductors in each branch circuit.
Specification