Abstract: A base assembly is provided for a power pedestal including an elongated housing and a plurality of electrical conductors enclosable by the elongated housing. The elongated housing has a first end and a second end disposed opposite and distal from the first end. The base assembly includes a power pedestal base member having a first end and a second end disposed opposite and distal from the first end. The second end of the base member is structured to be coupled to a platform. A connecting mechanism, such as a hinge assembly, is disposed at or about the first end of the base member and removably couples the first end of the elongated housing to the base member without a number of separate fasteners, thereby facilitating removal of the elongated housing from the base member. An electrical bus mount may be removably coupled to a mounting surface of the base member.

Abstract: A transfer switch having a transfer control provides electric power to a load. The transfer switch includes a power switching device provided with electric power from a first power source, such as a utility power source, and a second power source, such as a generator power source. The transfer control is structured to monitor the second power source, maintain a runtime count of the second power source, locate a piece of data concerning a maintenance procedure in a storage corresponding to a current value of the runtime count, and provide an indication of a need to perform the maintenance procedure.

Abstract: A method of detecting arcing conditions includes sensing current and HF signals therefrom; bandpass filtering the HF signals and providing filtered signals; detecting peak signals and envelopes from the filtered signals; counting occurrences of the envelopes exceeding a first value; maintaining temporary values corresponding to the peak signals; determining a trip time as a function of the current; determining if any peak signal is greater than a second value, and responsively increasing a temporary value and, otherwise, decreasing the temporary value; determining if a predetermined function of the temporary values is greater than a fifth value, and adding the temporary values to an accumulator, and otherwise, decreasing the accumulator; and tripping open the power circuit if: a difference between the occurrences of current and immediately previous half cycle having the same polarity is at least two, the accumulator is greater than a seventh value, and the trip time is reached.

Abstract: A bearing assembly is provided for an electrical switching apparatus including a housing having at least one parting line and an exterior side, a stationary contact assembly disposed on one side of the parting line, a movable contact assembly, and an operating mechanism with a pole shaft for moving the movable contact assembly into and out of electrical contact with the stationary contact assembly. The bearing assembly includes a number of primary bearings pivotably supporting the pole shaft on the same side of the parting line as the stationary contact assembly. An integral bearing section including secondary bearings pivotably couples the pole shaft to the housing at least one bearing cover member having a fastening portion. The pole shaft is pivotably disposed at or about the integral bearing section on the exterior side of the housing. A housing and an electrical switching apparatus are also disclosed.

Abstract: An extension assembly is provided for an enclosure coupled to a structure, such as a building wall. The enclosure includes a panel member, a plurality of sides extending outwardly from the panel member to define an interior having a depth and forming an opening for accessing the interior, and a cover. The extension assembly includes at least one extension member coupled to at least one of the sides of the enclosure, and having a depth, and an adapter collar. The adapter collar overlays the extension member(s) and includes a flange portion engaging the exterior surface of the wall, and an aperture extending through the flange portion. The flange portion receives the cover of the enclosure, in order to provide access to the interior of the enclosure through the aperture of the flange portion. The extension assembly increases the depth of the enclosure by the depth of the extension member(s).

Abstract: A tool is provided for removing a circuit breaker from a mounting member or a housing. The tool includes a housing having a first end, a second end, a first side, a second side, a surface, and an axis. Disposed at the first end of the housing is a recess that is structured to receive the operating handle or actuator lever of the circuit breaker, while a number of apertures are disposed substantially adjacent to the second end of the housing. One or more mechanical fasteners extend through the apertures and secure the housing to the circuit breaker.

Abstract: A circuit breaker includes separable contacts, an operating mechanism structured to open and close the separable contacts, and a magnetic trip mechanism cooperating with the operating mechanism to trip open the separable contacts. The magnetic trip mechanism includes a support structure including a slotted support portion therein, and a plunger assembly. The plunger assembly includes a movable core resting in the support portion of the support structure, and a plunger member including a first portion cooperating with the operating mechanism, a second portion coupled to the movable core, and a third portion engaging the support structure.

Abstract: A trip actuator reset assembly for a circuit breaker includes a cradle assembly, a reset lever, a trip actuator, and a rigid element. The cradle assembly is pivotably coupled to the circuit breaker pole shaft, and includes a number of springs. A pivot pivotably couples the reset lever to the circuit breaker housing. In response to a trip condition, an actuating element of the trip actuator moves a first end of the reset lever. The rigid element is pivotably coupled to the housing proximate a second end of the reset lever. To reset the trip actuator, a guide member guides the cradle assembly into engagement with the rigid element which pivots the reset lever. The first end of the reset lever then resets the trip actuator. After reset, if the cradle assembly continues to move, then the springs accommodate the additional motion.

Abstract: A current transformer comprises a coil, a core and a shunt member. The core forms a magnetic circuit and has a first permeability. At least a portion of the core is encircled by the coil. The shunt member is coupled to the core and has a second permeability. The shunt member is continuous and forms a magnetically parallel path with the at least a portion of the core encircled by the coil. The current transformer may be incorporated in to a trip device.

Abstract: An electrical bus assembly for an electrical enclosure includes a single branch circuit with a plurality of branch circuit buses. First electrical bus members include first ends electrically connected to corresponding branch circuit buses, and second ends electrically connected to a first circuit breaker. Second electrical bus members include first ends electrically connected to corresponding branch circuit buses, and second ends electrically connected to a second circuit breaker. The single branch circuit provides electrical power to the first and second circuit breakers. The first electrical bus members extend in a first lateral direction with respect to the branch circuit buses, and the second electrical bus members extend in a second, opposite lateral direction. The electrical bus assembly enables the first circuit breaker to be disposed horizontally adjacent to the second circuit breaker within a corresponding one of the cells of the electrical enclosure.

Abstract: A solenoid assembly for a circuit breaker having a clapper with an increased mass is provided. The mass, preferably at least one non-ferrous slug, increases the mass of the clapper so that the solenoid response time is slowed. That is, the added mass creates an inertial delay that slows the solenoid clapper as the clapper moves between the first position and the second position. Preferably, the delay is between 48 ms and 60 ms, and more preferably 50 ms. The clapper having a non-ferrous slug may also be incorporated into existing circuit breakers by, for example, coupling the non-ferrous slug to the preexisting clapper, or replacing the clapper with a clapper assembly having at least one non-ferrous slug thereon.

Abstract: A seal assembly for an electrical enclosure having a draw-out circuit breaker and a number of conductors is provided having a movable first seal member and a movable second seal member. The circuit breaker includes a protruding nose portion that is engaged by the first and second seal members in a manner that sealingly engages the nose portion. The arrangement of the first and second seal members and the nose portion provides for the sealing engagement to be maintained when the circuit breaker is moved from a first position in which the circuit breaker is not electrically connected to the number of conductors and a second position in which the circuit breaker is electrically connected to the number of conductors.

Abstract: An arc fault circuit interrupter includes separable contacts, a neutral conductor, an operating mechanism structured to open and close the separable contacts, at least one current sensor structured to sense current flowing through the separable contacts and output a sensed current value; and a processor. The processor includes a first routine structured to provide parallel arc fault detection, a second routine structured to provide series arc fault detection, and a third routine structured to enable the first routine and disable the second routine for a predetermined time when the sensed current value is greater than a predetermined value and to enable the second routine and disable the first routine for the predetermined time when the sensed current value is less than the predetermined value.

Abstract: An electrical switching apparatus accessory sub-assembly is for an electromagnetic coil including a movable stem. The electrical switching apparatus accessory sub-assembly includes a coil frame having a first end and an opposite second end. A housing includes a plurality of interior surfaces, a first end and an opposite second end. The second end of the housing has an opening structured to receive the movable stem of the electromagnetic coil. A number of the interior surfaces of the housing are structured to selectively hold the coil frame in either one of a first position in which the coil frame first end faces the housing first end and the coil frame second end faces the housing second end, and a second position in which the coil frame first end faces the housing second end and the coil frame second end faces the housing first end.

Abstract: A limiter includes three current limiters. Each current limiter includes a first end disposed proximate a first housing surface and electrically connected to a corresponding first terminal, a second end disposed proximate a second housing surface and electrically connected to a corresponding second terminal, an elongated body disposed between the ends, and a plunger. Two plungers define a straight line and a third plunger is offset from the straight line. Three indicator members each include a first end, an indicator disposed therefrom, and an opposite second end, which is engaged by a corresponding plunger. The indicator is disposable through a corresponding housing opening. Three springs bias corresponding indicator members away from the second housing surface. The housing carries two indicator members in a first orientation and a third indicator member in a different second orientation. The indicators are positioned in a straight line and are disposable through corresponding housing openings.

Abstract: An electrical connector assembly is provided for electrically connecting an electrical apparatus, such as a circuit breaker, to an electrical bus member. The electrical connector assembly includes a contact stab extending outwardly from the electrical bus member. The contact stab includes first and second sides having first and second indentations, respectively, which are disposed opposite one another. A clip member mechanically couples and electrically connects the circuit breaker to the contact stab. The clip member includes a first leg and a second leg disposed opposite and distal from the first leg. The first leg engages the first indentation of the first side of the contact stab and the second leg engages the second indentation of the second side of the contact stab, thereby retaining the clip member on the contact stab.

Abstract: A handheld electronic device, such as a fob, includes a wireless communication port and a display alternatively displaying a first or right-handed display orientation and a second or left-handed display orientation. The first display orientation is inverted with respect to the second display orientation. A processor component cooperates with the wireless communication port and the display. The processor component is adapted to receive a wireless radio frequency message including one of a first state and a different second state from the wireless communication port. The processor component then responsively configures the display in the first display orientation responsive to the first state or alternatively configures the display in the second display orientation responsive to the second state.

Abstract: A manual opening device is for an electrical switching apparatus, such as a synchronous circuit breaker, including a housing having an opening, a plurality of pole mechanisms each comprising separable contacts, and at least one operating mechanism including a number of actuators adapted to open and close the separable contacts. The operating mechanism is supported by the housing and includes a corresponding pole shaft. The manual opening device comprises an operating handle, a cam assembly, and a drive assembly. A first end of the operating handle protrudes through the opening of the housing and the second end is coupled to the cam assembly. The drive assembly couples the cam assembly to the corresponding pole shaft of the operating mechanism and cooperates with the corresponding pole shaft and actuators to simultaneously open the separable contacts when the operating handle is moved from a first position to a second position.

Abstract: A terminal shield is provided for an electrical switching apparatus including a case having a first housing member, a second housing member coupled to and disposed opposite from the first housing member, a first end, a second end, a number of terminals, and a number of terminal openings. Each of the first and second housing members has a first side and a second side. The terminal shield includes at least one pair of protrusions extending outwardly from the case on opposing sides of a corresponding one of the terminal openings. Each protrusion has an interior surface facing a corresponding one of the terminals, and an exterior surface disposed opposite the interior surface. The exterior surface of each protrusion aligns with the first side of a corresponding one of the first and second housing members.

Abstract: A rotating display device enables a user to view, in a variety of viewing orientations, a value of an electrical apparatus to which the rotating display device is electrically and mechanically connected. The rotating display device includes a housing having a first half and a second half, a display for displaying the value, a rotating member disposed within the second half, a retention member slideably received into the rotating member, and a wiring harness secured to the rotating member by the retention member.