A vapor barrier cover for installation to an electrical box in the rough-in phase of construction. The vapor barrier cover includes a flange with an opening having an inner periphery and a body extending from the inner periphery of the flange. The body includes walls extending to a front edge. A front wall extending from the front edge includes a front opening and a rearward extending wing. Installation of the vapor barrier cover enables inspection and testing for air-tightness around the periphery of the electrical box prior to the final phase of construction and without the need for a gasket.

A lid for a utility enclosure having a front end, a rear end, a right side, a left side, a top lid portion, and a bottom, defining an interior. Large reinforcement ribs are on an interior surface of the top lid portion and form a lattice-type structure. Small reinforcement ribs are mounted in spaces formed by the lattice type structure. The lid is made of glass fiber-reinforced polypropylene and metal bars or rebar are embedded in the large reinforcement ribs. The metal bars are positioned near a bottom of the large reinforcement ribs and spaced above the bottom. The physical structure of the lid and the lid's composition, consisting essentially of glass fiber-reinforced polypropylene, are constructed so that the lid withstands up to 33,750 pounds of force without breaking or being deformed.

A switching system may include a body and a set of key elements. The body may be electrically connectable to a first electrical device and a second electrical device, and may have a keypad with key element attachment features to which the key elements can be attached. The key elements may be attachable in various positions and/or combinations on the keypad. The key elements may include one or more buttons of various sizes and/or a rocker. The keypad may have multiple positions to which key elements can be attached, with larger key elements requiring multiple positions. The key element attachment features may be domes, which may be inserted into holes in tabs extending from the key elements to pivotably attach the key elements to the keypad. Each key element may be retained on the keypad independently of any other component aside from the keypad and the key element.

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 cover for covering at least a portion of electrical power distribution equipment, such as an open end of a conduit riser. The cover has a bottom opening for fitting over the open end of the conduit riser. The cover has an upper opening to allow egress of one or more wires from the open end of the conduit riser. The cover can be configured for fitting over conduit risers of various sizes and/or accommodating different numbers or sizes of wires. The cover can include ventilation openings for permitting egress of heat from the open end of the conduit riser.

A high voltage equipment box for a rail vehicle includes a box body and electric equipment arranged in the box body, two ends of the box body in a width direction of the vehicle extend to respective skirt plates, and an avoidance gap is provided at a bottom of each of the two ends of the box body, a bottom of each of the skirt plates is fixed at the respective avoidance gap, a top of the box body extends to a position above a bottom beam of a vehicle body, and a bottom of the box body is flush with a bottom plate of the vehicle body and forms a part of the bottom plate of the vehicle body.

A wiring device includes a housing that encloses a line voltage port and/or a low voltage port for providing power to at least one removable load. The housing has an intake opening and an exhaust opening for drawing cooling air into the housing and for exhausting heated air. A fan is disposed within the housing and operates to move the air through the housing. A thermal load such as a heat sink or a transformer is positioned within the housing and receives cooling air to reduce the temperature of the load. The fan is energized when a sensed temperature in the housing exceeds a first predetermined threshold. Power to the line and/or low voltage port is reduced or shut off if the sensed temperature in the housing exceeds a predetermined value that is greater than the first predetermined threshold.

Provided herein in some embodiments is an quick-connect electrical junction box including a front cover, a bus module, and a back cover configured to fit together and form the quick-connect electrical junction box. The front cover can include a front face including a number of sockets configured to accept a number of prongs of one or more electrical accessory modules. The front cover can also include a back face including a number of clamp tunnels corresponding to the number of sockets. The bus module can include a front face including a bus assembly fixed to the bus-module front face, wherein the bus assembly can include a number of clamps correspondingly disposed in the number clamp tunnels. The bus module can also include a back face including a number of bus assembly-connected wire lugs fixed thereto for wiring the quick-connect electrical junction box to a circuit breaker or another quick-connect electrical junction box.

A receptacle assembly for attachment to a mounting surface is provided and includes a receptacle mount having a flange attachable to the mounting surface. A deck of the receptacle mount extends from the flange opposite the mounting surface and a hood extends from the deck opposite the mounting surface. An electrical box is attachable to the rearward side of the receptacle mount and is disposed entirely between a forward edge of the hood and a back of the flange of the receptacle mount, such that none of the electrical box is recessed into the mounting surface.

A junction box assembly including a box and a selectively displaceable lid, the lid including one or more articulating lock sockets and one or more lock hinge sockets. Hinge arms can be pivotally coupled to the box, with a first hinge arm also being pivotally secured to an articulating hinge socket to accommodate pivotal displacement of the lid from the box, as well as pivotal displacement of the lid about a portion of the first hinge arm. A second hinge arm can be selectively removable from secure engagement with the lock hinge assembly. Further, a tamper resistant pin can extend through the upper head portion of the second hinge arm when the second hinge arm is engaged with the lock hinge socket so as to lock the second hinge arm to the lid, and thereby secure the lid at a closed position on the box.