Abstract: In a panelboard (30) of the type having a main circuit breaker (34) or other circuit protection device and at least one busbar (46, 48, 50) for transmitting electrical power to branch circuit breakers (36) connected thereto, a connector installation kit (78) for connecting a load terminal of a main circuit breaker (34) to a busbar (46, 48, 50) including a self-supporting, insulator housing (160) having at least one recess (166, 168, 170) defined therein; and at least one phase connector (172, 174, 176) having a first portion connected to a load terminal of a main circuit breaker (34) and a second portion connected to the busbar (46, 48, 50).

Abstract: A panelboard (30) for distribution of electrical power from a feed line to branch power lines having at least one neutral/bus support assembly (44), with at least one insulating member (100) having a locating pin (52, 54, 56) projecting therefrom. The assembly (44) has a conductive neutral tie strap (70) attached to the insulating member (100) for conduction of neutral phase current. The strap (70) provides attachment points (124) for a neutral lug (39), and for structural support of the neutral/bus support assembly (44) in conjunction with the insulating member (100). At least one neutral rail (68) is connected to the neutral tie strap (70). The panelboard (30) has at least one busbar (46, 48, 50) disposed over the neutral/bus support assembly (44), defining a hole (151) therein for capture therein of a locating pin (52, 54, 56). The busbars (46, 48, 50) are adapted for transferring electrical power from a feed line to a line end of a branch circuit breaker (36) which is connectable to the busbar.

Abstract: A panelboard bus bar arrangement. The arrangement includes an insulating base pan which is supported upon a steel base pan. The arrangement also includes three bus bars positioned within the insulating base ban and arranged side-by-side in a parallel manner. The distance between the bus bars is maintained relatively small by using an insulating member which shields and insulates the bus bars from each other. The insulating member includes openings which expose only portions of the bus bars, and dividers which separate adjacent openings and increase the cross surface distance between the openings. By increasing the cross surface distance between openings, arcing is inhibited between the openings.

Abstract: A three-phase load center which has a base pan including a first and a second bus bar for a first and a second phase. The bus bars are positioned on the top surface of the base pan. A third bar for a third phase is positioned beneath the base pan such that the bus bar is in contact with the bottom surface of the base pan. An insulator is connected to the base pan such that the third bus bar lies between the base pan and the insulator. The base pan and the third bus bar are each provided with ribs and grooves. These ribs and grooves cooperate to form ventilation passageways.

Abstract: A front panel assembly for an electrical panelboard or the like. An interior trim panel is fastened within the enclosure proper, having holes through which circuit breakers may protrude and having upstanding edge flanges. A panelfront assembly includes a number of rotatable camming latches for engaging the edges of the flanges. The latches are secured in place with threaded screws extending through rabbets which are concealed by the door of the panelfront.