A system for mounting pendant lighting fixtures includes an interface component adapted to be at least partially retained in an opening defined by a ceiling. The interface component defines at least one aperture to accommodate a hanging support extending through the opening and configured to support a pendant lighting fixture. The system includes a cover plate defining at least one aperture to accommodate the hanging support. The system also includes at least one magnetic element operable to exert a magnetic bias on the cover plate to secure the cover plate against the interface component and at least partially cover the opening.

THE KNEE SAVER HARNESS WIRED JUNCTION BOX comprises a wiring harness and an enclosure. It provides a work surface to measure, cut, and remove some sheathing from electrical cables, in preparation to install those cables to electrical receptacles and/or switches. The prepared wires are then connected to a HUB and termination devices, forming a wiring harness, outside of an enclosure. This wiring harness is now inserted into an installed electrical PVC or metal box, while the installer is standing up, and on the first day of the installation process. The core termination device and enclosure, can handle more than one power source, with different amperages, at the same time.

A pre-fabricated universal operating room ceiling system including red iron steel support frames and a track assembly immediately above the ceiling in the interstitial space of the operating room for supporting medical equipment including medical gas lines and electrical and data cabling and heating, ventilation and cooling trunk lines and ducts for reducing interference with such systems when installing or moving operating room equipment.

A system for mounting pendant lighting fixtures includes an interface component adapted to be at least partially retained in an opening defined by a ceiling. The interface component defines at least one aperture to accommodate a hanging support extending through the opening and configured to support a pendant lighting fixture. The system includes a cover plate defining at least one aperture to accommodate the hanging support. The system also includes at least one magnetic element operable to exert a magnetic bias on the cover plate to secure the cover plate against the interface component and at least partially cover the opening.

Disclosed herein are an electrical wiring structure with connection points arranged on side walls and a building construction method, which can improve convenience of electrical wiring construction and reduce electrical wiring materials. The electrical wiring structure includes a first power wire drawn out of a distribution box and disposed through a first conduit embedded in a concrete-made bottom base of an indoor space, a first joint box embedded at a predetermined height in a first side wall formed in the indoor space and electrically connected to the first power wire, a first light wire electrically connected to the first joint box, and a second joint box embedded at a predetermined height in a second side wall formed in the indoor space and electrically connected to the first joint box by a second power wire disposed through a second conduit embedded in the bottom base of the indoor space.

An electrical cable assembly, comprising a first electrical circuit further comprising a first plurality of insulated conductors longitudinally disposed to one another, wherein the first plurality of insulated conductors are cabled together in a bundle. The electrical cable assembly further comprises a second electrical circuit longitudinally disposed to the first electrical circuit, the second electrical circuit comprising a second plurality of insulated conductors longitudinally disposed to one another and cabled together in a bundle and a nonmetallic jacket surrounding the second plurality of insulated conductors and wherein the nonmetallic jacket isolating the first electrical circuit from the second electrical circuit. The electrical cable assembly further comprises a flexible interlocking metallic armor encasing the first and second electrical circuits.

An electrical cable assembly comprising a first electrical circuit comprising at least two insulated conductors, a second electrical circuit, and a conductive metallic armor encasing the first and second electrical circuits, wherein the conductive metallic armor provides a return ground path. The second electrical circuit comprising at least two control insulated conductors, a jacket surrounding the control insulated conductors, and a wrap surrounding the jacket which is surrounding the control insulated conductors.

An electrical box bar hanger includes an adjustable channel having a plurality of locking tabs at distal ends thereof and first and second end plates with each of the first and second end plates having a plurality of locking apertures thereon. The first and second end plates are integrally connected to each distal end of the adjustable channel. When each end plate is bent 90 degrees against each corresponding end of the adjustable channel, each of the plurality of locking apertures aligns with each corresponding locking tab, such that the plurality of locking tabs can be inserted into corresponding locking aperture to allow the first and second end plates to be perpendicular with the adjustable channel without the use of welding.

A system for mounting pendant lighting fixtures includes an interface component adapted to be at least partially retained in an opening defined by a ceiling. The interface component defines at least one aperture to accommodate a hanging support extending through the opening and configured to support a pendant lighting fixture. The system includes a cover plate defining at least one aperture to accommodate the hanging support. The system also includes at least one magnetic element operable to exert a magnetic bias on the cover plate to secure the cover plate against the interface component and at least partially cover the opening.

An electrical cable assembly, comprising a first electrical circuit further comprising a first plurality of insulated conductors longitudinally disposed to one another, wherein the first plurality of insulated conductors are cabled together in a bundle. The electrical cable assembly further comprises a second electrical circuit longitudinally disposed to the first electrical circuit, the second electrical circuit comprising a second plurality of insulated conductors longitudinally disposed to one another and cabled together in a bundle and a nonmetallic jacket surrounding the second plurality of insulated conductors and wherein the nonmetallic jacket isolating the first electrical circuit from the second electrical circuit. The electrical cable assembly further comprises a flexible interlocking metallic armor encasing the first and second electrical circuits.