The present invention provides a base electrical box, and an end portion. The end portion is added to the base electrical box to substantially complete the electrical box. The electrical box also includes at least one intermediate portion that is added to complete the electrical box. The at least one intermediate portion is placed between the base electric box and the end portion.

A bracket system for mounting an electrical box and other components can include a mounting bracket configured to be removably secured to a support bar or a threaded rod. The mounting bracket can include a plurality of spring arms that can be manually moved towards each other to insert locking profiles of the spring arms into one or more mounting openings of the electrical box. Once the locking profiles are inserted, the spring arms can be released so that they spring resiliently apart from each other and secure the locking profiles against removal from mounting openings.

An electrical connection assembly includes an electrical box including a housing having an internal surface defining an internal volume of the housing. An electrical connector is positioned outside the internal volume of the housing and fixed to the housing with a fastener. The housing includes an aperture having an opening defining an insertion path extending from a location external to the housing along a frame of the electrical connector to a location within the internal volume of the housing. The assembly includes a disc mechanically secured to the housing relative to the opening to obstruct the insertion path. A retainer and a bushing including a membrane for the electrical connector as well as methods of making an electrical connector are also provided.

A Z-bracket is adapted for mounting an electrical box to the open face of a metal stud. The invention has two mounting platforms with self-tapping screw holes. The flat brackets of an electrical box are secured to these mounting platforms. The invention has a retaining tab with at least one retaining indentation for screwing the retaining tab to the open face of a metal stud. A connector connects the retaining tab to the mounting platforms. The front edge of each mounting platform has a groove, which accommodates the tongue on a tab of the metal stud. Multiple triangular braces connect the mounting platforms to the connector for structural support. The invention is sized to fit a standard metal stud, providing an improved method for attaching electrical boxes to the open face of a metal stud.

Modular junction boxes are disclosed. In one embodiment, a junction box for convenient modular industrial wiring is provided having a plurality of walls defining a first internal space of the junction box and at least one open face, a first connection area located on a first external face of the junction box having a first opening for receiving at least three electrical wires, a bus bar stack located in the first internal space of the junction box, a removable junction device having at least one contact support being mechanically and electrically attachable to the bus bar stack, and wherein when the junction device is attached to the bus bar stack, the junction device is electrically connected through the at least one contact support to one of at least three input openings of the bus bar stack.

A system and leveling device for installing an electrical box or ring on a wall stud, and a process for installation using the same. The leveling device has a generally planar elongated substrate having a horizontal bubble level on a front face and positioning pins on a rear face. The positioning pins are configured for insertion into gang screw holes on the electrical box or ring. The system includes cross-stud braces for spanning the distance between adjacent wall studs. The electrical box or ring has pass-through slots to receive the cross-stud braces so that the electrical box or ring can be leveled using the leveling device prior to attaching the cross-stud braces to the wall studs.

Various components and subcomponents of a pluggable modular system for electrical junction boxes are described herein. In various embodiments, a jbox interface chassis is configured to be wired and fastened within an electrical junction box to provide a hot-swappable pluggable interface between the wires in the electrical junction box and each of a plurality of hot-swappable pluggable modular devices. The jbox interface chassis may include a front pluggable interface configured to electrically mate with a corresponding rear pluggable interface on a casing of each pluggable modular device. As an example, the jbox interface chassis may include a plurality of slots or holes to receive a corresponding plurality of blades or pins on the casing of each pluggable modular device. Additionally, device adapters are described herein to convert a wide variety of legacy electrical devices into pluggable modular devices.

A cover plate that is connectable to an electrical box includes a body configured to mount to a stud, a brace assembly, or in a gang application on opposite sides of the stud.

A mounting bracket for electrical boxes that can include a mounting body with a plurality of mounting features. The plurality of mounting features can include a first set of mounting openings that can have respective elongate directions extending in parallel. The mounting body can have a mounting body axis extending across a shortest between opposing first and second sides of the mounting body. The elongate directions of the first set of mounting openings can be disposed at an acute angle relative to the mounting body axis. The first set of mounting openings can be configured to receive a plurality of fasteners to attach the mounting bracket to a first electrical box.

An electrical box assembly is provided that includes an electrical box and a bracket connected to the electrical box with the bracket being configured to mount the electrical box to a stud, a brace assembly, in a gang application, or, when the electrical box is a first electrical box and the bracket is a first bracket that is mounted to a first side of the stud, a second bracket connected to a second electrical box can be mounted to a second side of the stud at the same time that the first bracket is mounted to the first side of the stud so that at least a portion of the first bracket is at the same height of at least a portion of the second bracket on the stud. A flat blank for a brace is additionally provided that includes a middle portion connected between a first strip and a second strip, a first cutout being formed between the first strip and the middle portion, and a second cutout being between the second strip and the middle portion.