A modular, non-metallic enclosure with a first enclosure having an open end between first and second side panels and a second enclosure having an open end between third and fourth side panels. At the open end of the first enclosure, the first and second side panels each include a guide rail having a male guiderail member and a female guiderail channel. At the open end of the second enclosure, the third and fourth side panels each include a guide rail having a male guiderail member and a female guiderail channel. The male guiderail member/female guiderail channel of the first sidewall are configured to engage with the opposite of the male guiderail member/female guiderail channel of the third side wall. The male guiderail member/female guiderail channel of the second sidewall are configured to engage with the opposite of the male guiderail member/female guiderail channel of the fourth side panel.

A high-voltage junction box for an electrically driven vehicle includes a housing part with at least one mounting hole, a contactor mechanically connected to the housing part by at least one fastening element extending through a through hole in the contactor into the mounting hole, and a bus bar having a first contact area and a second contact area. The first contact area is electrically and mechanically connected to the contactor and the second contact area is electrically and mechanically connected to a connector. A tolerance compensation element suitable to compensate for tolerance variations in a distance or space between the housing part and the contactor is mounted in the at least one mounting hole. An electrically driven vehicle with a charging unit including a high-voltage junction box is also provided.

A protective cover to cover an opening of an electrical box having a threaded bore on inwardly projecting protrusions. In one approach the protective cover may have a back panel and four side panels together defining an interior cavity; a flange connected to a free edge of the side panels; wherein the flange has a pair of keyhole shaped bores defining a pair of openings along a center longitudinal axis of the flange; and wherein the keyhole openings are configured to allow a head of a screw to extend from the threaded bore and through a rounded portion of the keyhole opening and to allow a threaded shaft of the screw to slide along the length of an elongated narrow portion of the keyhole opening, the narrow portion being narrower than the diameter of the screw head.

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 locking structure includes: a locking protrusion and a locking arm. The locking arm includes a flexible arm main body and an engaging projection portion protruding from an outer surface of the arm main body. The locking protrusion includes a protrusion main body on which an arm guide surface, a protruding tip surface, and an engaging surface are disposed along the engagement direction, and a jig groove that is formed in the protrusion main body. The engaging projection portion is formed on the outer surface at a position away from an arm tip of the arm main body in the engagement direction. The protruding tip surface is longer than the arm tip in the engagement direction. The jig groove cuts out the protrusion main body in the engagement direction from the arm guide surface to the protruding tip surface.

A wiring device of photovoltaic power generation equipment includes an aluminum wire and a copper-aluminum transition element. One end of the aluminum end is connected with the aluminum end of the copper-aluminum transition piece, and the other end of the aluminum end is configured to connect with an external connecting component. The copper end is configured to connect with photovoltaic power generation equipment. In the wiring device of the photovoltaic power generation equipment provided in the present application, the copper-aluminum transition piece is arranged at the position of the photovoltaic power generation equipment, and the aluminum end of the copper-aluminum transition piece is connected to the external connecting component by the aluminum wire, avoiding using copper wire for long-distance conduction. The cost of the aluminum wire is much lower than that of the copper wire. Therefore, the cost of the wiring device provided by the application is reduced.

A foldable extension enclosure for a utility enclosure, each having first, second, third, and fourth sides connected by hinges and each folding only in one direction by means of detents on the sides. A first end of the first side slidably overlaps a second opposite end of the third side and a first end of the second side slidably overlaps a second opposite end of the fourth side. There is an internal top ledge on each side in an interior near a top end of the extension enclosure and the utility enclosure and an external bottom ledge on each side on an exterior near a bottom end of the extension enclosure, to mount the extension enclosure to the utility enclosure with concave and convex detents. Convex detents are at the top end of the utility and extension enclosures and concave detents are at the bottom end of the extension enclosure. The convex detents also reversibly lock a lid to the tops of the utility and extension enclosures.

A repair clip for a gang box with a damaged threaded opening is provided. The repair clip includes a top wall, a front wall, and a rear wall. The top wall has a replacement opening that is positionable over the damaged threaded opening. The front wall has a leg depends from the top wall at a front shoulder region. The front wall and/or the front shoulder region are elastically deformable so as to apply a clamping force on an inner wall of the gang box. The rear wall depends from the top wall at a rear shoulder region, the rear wall and/or the rear shoulder region being elastically deformable so as to apply a clamping force on an outer wall of the gang box. The replacement opening is elongated in a direction between the front and rear walls.

As described herein, a wall box installation tool may include a template body, one or more hollow pegs, a guide ring, and/or one or more template cards. The template cards may be configured to be installed on a front surface of the template body. A template card may define a plurality of holes therethrough. The guide ring may be configured to be installed within a pre-drilled hole in a wall. Each template card may be associated with a respective electrical device configuration. A subset of bores extending through the hollow pegs may be accessible via the template card when the template card is installed on the front surface of the template body. The wall box installation tool may include one or more fasteners that are configured to install a template card onto the front surface of the template body.