Abstract: An enclosure for an electrical distribution panel includes a box having a front opening covered by a front panel having a cut-out portion. An insert is seated in the cut-out portion and includes removable knockout panels for access to circuit breakers mounted in the enclosure. The insert may be provided with a c over which enhances the appearance of the enclosure and provides a waterproof seal. The size of the insert is selected based on the type of circuit breaker to be mounted in the enclosure. By changing the size of the insert, the enclosure can be used with different types of circuit breakers. The enclosure can also be adapted for indoor or outdoor use. The enclosure avoids the disadvantages of conventional enclosures which are designed differently for different types of circuit breakers, and include entirely different components for indoor and outdoor use.

Abstract: A slidable sealing cover assembly for unmetered electrical horizontal bus connections arranged in a customer compartment adjacent to a utility compartment for a panel board arrangement. The sealing cover assembly employs a cover member and a slide member attached to each end of the cover member. The cover assembly is slidably mounted on an existing fixed bus housing for the bus connections. A slotted end of each slide member extends into the utility compartment, and a slidable latching mechanism mounted on a wall of the utility compartment engages the slotted end of each slide member. When the cover member is positioned over the bus connections in the customer compartment, the slidable latching mechanisms are operated to enter the slot on the slotted end of each slide member so that the hinged door to the utility compartment can be closed.

Abstract: A sliding, door latch has a latch member and a spring member integrally molded in one-piece. The latch member, which can be secured in a latch opening in a thin door panel without the use of tools, includes a planar base member which covers and slides reciprocally in the opening. An integral actuator extends traversely from the back of the base member through the opening and has integral bosses on its sides which form grooves engaging tangs in the sides of the latch opening. An integrally molded latch finger projects from the actuator toward the door panel edge. The spring member includes a first pair of spaced apart elongated elements integrally hinged to the actuator, a second pair of elongated elements integrally hinged at one end to the first pair, a beam integrally hinged to and connecting the other ends of the second pair of elongated elements, and a hook integrally molded to the center of the beam and engaging the rear edge of latch opening.

Abstract: A polymeric electrical enclosure has an electrical access knockout having a plurality of concentric grooves integrally molded into a wall section of reduced thickness. A plurality of angularly spaced, frangible flow leaders all bridge the outermost groove, with a lesser number bridging the remaining concentric grooves to facilitate the flow of material during molding to the knockout segments defined by the grooves. The concentric grooves are progressively deeper from the outermost to the innermost to aid in selective removal of inner segments without fracture of the outer segments. A flow leader which bridges all the grooves becomes narrower at the inner grooves, as less material need flow through that section of the flow leader, and the narrower section fractures sooner, thus aiding in selective removal of the inner segments of the knockout.

Abstract: In an improved panel interior assembly of the type in which elongated bus bars are snap-fit into an insulating support structure a plurality of integrally molded pins are attached to the insulating support structure positioned to extend through holes in a pan to which the insulating support structure is to be attached. These pins are ultrasonically staked to securely hold the insulating support structure and bus bars attached thereto on the pan.

Abstract: In an improved panel interior assembly of the type in which elongated bus bars are snap-fit into an insulating support structure a plurality of integrally molded pins are attached to the insulating support structure positioned to extend through holes in a pan to which the insulating support structure is to be attached. These pins are ultrasonically staked to securely hold the insulating support structure and bus bars attached thereto on the pan.

Abstract: In an improved panel interior assembly of the type in which elongated bus bars are snap-fit into an insulating support structure a plurality of integrally molded pins are attached to the insulating support structure positioned to extend through holes in a pan to which the insulating support structure is to be attached. These pins are ultrasonically staked to securely hold the insulating support structure and bus bars attached thereto on the pan.

Abstract: An electrical bussing and jumper assembly for use with electrical switching devices such as circuit breakers in a three-phase distribution system. The bussing and jumper assembly comprises a plurality (three) of relatively thin, wide, bus plates stacked together in a compact sandwich-like array. Each of the plates has a plurality of jumper portions extending transversely through openings or cutouts provided in the bus plates superimposed thereover. The bus plates are insulated from each other by means of insulative coatings (e.g., of polyvinyl chloride) formed on the plates and also by means of sheets of insulative material (e.g., of polyethylene terephthalate) disposed between the coated bus plates and having openings therein aligned with the openings in the bus plates. Switching devices for use in a current distribution system are attached to the jumper portions of the bus plates, using threaded openings provided in the jumper portions.

Abstract: An electrical bussing and jumper assembly for use with electrical switching devices such as circuit breakers in a three-phase distribution system. The bussing and jumper assembly comprises three relatively-thin, wide bus plates stacked together in a compact sandwich-like array. Each of the plates has a plurality of openings therein defining a pair of parallel side portions and a plurality of jumper portions transverse to and bridging the side portions. The jumper portions of bus plates are variously concave (top bus plate), flat (center bus plate) and convex (bottom bus plate) and spaced from each other such that when the bus plates are stacked together, the jumper portions are arranged in a ladder-like array and central portions of the jumper portions are all in a common plane. The bus plates are insulated from each other by means of insulative coatings (e.g., of polyvinyl chloride) formed on the plates and also by means of sheets of insulative material (e.g.