1. Field of the Invention
The invention relates to an electrical connector and, more particularly, to an electrical connector which is attached to a structure or member.
1. Brief Description of Prior Developments
In residential housing, grounding of electrical service equipment, such as an electrical meter socket enclosure and an electrical equipment enclosure (such as a circuit breaker box), is provided. Intersystem bonding termination can be provided for services such as telephone, television, security systems, and network-powered broadband communications systems (NPBCS) cable for example. In the United States of America, a new article of the National Electric Code (NEC), Article 250.94, provides a standard regarding intersystem bonding termination. The termination needs to be accessible for connection and inspection, have the capacity for not less than 3 conductors, and shall not interfere with opening a service or metering equipment enclosure. Eritech, Ilsco and Greaves sell different types of intersystem bonding termination connectors.
There is a desire to provide a new type of intersystem bonding termination connector which can be connected to either electrical service equipment, such as an electrical meter socket enclosure and an electrical equipment enclosure (such as a circuit breaker box), or another structure, such as the exterior side of a house for example. There is also a desire to provide a new type of intersystem bonding termination connector which can be reconfigured to be used in different locations or applications.
The following summary is merely intended to be exemplary. The summary is not intended to limit the scope of the claimed invention.
In accordance with one aspect of the invention, an electrical ground connector assembly is provided including a bus bar adapted to have a plurality of electrical wires separately connected thereto; and a combined electrical connection and mounting post assembly directly connected to the bus bar. The combined electrical connection and mounting post assembly is adapted to directly connect an electrical conductor thereto. The combined electrical connection and mounting post assembly extends from the bus bar in a generally cantilever fashion and is configured to supportingly attach the bus bar to a structure.
In accordance with another aspect of the invention, an electrical ground connector assembly is provided comprising an electrical connection section and a connecting system. The electrical connection section comprises a bus bar adapted to have a plurality of electrical wires separately connected thereto; and a post connector directly connected to the bus bar. The post connector is adapted to physically support the bus bar on a structure. The bus bar and post connector are adapted to be reconfigured relative to each other into at least two different configurations of the electrical ground connector assembly. The connecting system is for connecting the electrical ground connector assembly to at least two different types of structures. In a first one of the configurations a portion of the post connector is adapted to extend through a hole in a first one of the structures. In a second one of the configurations the post connector and the bus bar are configured to be substantially entirely located outside a second one of the structures at an exterior side of the second structure.
In accordance with another aspect of the invention, an electrical ground connector assembly is provided comprising an electrical connection section and a connecting system. The electrical connection section comprises a bus bar adapted to have a plurality of electrical wires separately connected thereto; and a combined electrical connection and mounting post directly connected to the bus bar. The combined electrical connection and mounting post is adapted to directly connect an electrical conductor thereto. The combined electrical connection and mounting post is adapted to physically support the bus bar on a structure. The connecting system is for connecting the electrical ground connector assembly to at least two different types of structures. The combined electrical connection and mounting post is adapted to connect to the electrical conductor inside the structure with the bus bar located outside the structure. The combined electrical connection and mounting post is adapted to alternatively connect to the electrical conductor outside the structure with the bus bar located outside the structure.
In accordance with another aspect of the invention, a method is provided comprising connecting a post connector directly to a bus bar in a first configuration, wherein the bus bar adapted to have a plurality of electrical wires separately connected thereto, wherein the post connector is directly connected to the bus bar, and wherein the post connector is adapted to physically support the bus bar on a first structure in a general cantilevered fashion; alternatively connecting the post connector directly to the bus bar in a second different configuration, wherein the post connector is adapted to physically support the bus bar on a second different structure in a general cantilevered fashion.
In accordance with another aspect of the invention, a method is provided comprising providing an electrical bus bar comprising a middle section with a post hole, and wire receiving areas on opposite sides of the post hole; connecting a mounting post to the bus bar by a connection comprising inserting the mounting post into the post hole through a first side of the bus bar to attach the bus bar to the mounting post in a first configuration; and providing the connection as an alternative connection wherein the mounting post can be inserted into the post hole through a second opposite side of the bus bar to attach the bus bar to the mounting post in a second different configuration, wherein the mounting post is adapted to attach the bus bar on a structure in either the first configuration or the second configuration.
In accordance with another aspect of the invention, an apparatus is provided comprising an enclosure forming a socket configured to have an electrical meter connected thereto; and an electrical ground connector assembly mounted to the enclosure. The electrical ground connector assembly comprises a bus bar adapted to have a plurality of electrical wires separately connected thereto; and a combined electrical connection and mounting post assembly directly connected to the bus bar. The combined electrical connection and mounting post assembly is adapted to directly connect an electrical conductor thereto. The combined electrical connection and mounting post assembly comprises a connection section located inside the enclosure which is adapted to have the electrical conductor directly attach thereto inside the enclosure. The bus bar is located outside of the enclosure.
The foregoing aspects and other features of the invention are explained in the following description, taken in connection with the accompanying drawings, wherein:
Referring to
The connector assembly 10, in this embodiment, is an electrical ground connector. The connector assembly 10 can be used to provide intersystem bonding termination such as for telephone, television, security systems, and network-powered broadband communications systems (NPBCS) cable at residences for example. In a preferred embodiment the connector assembly 10 fulfills the standard of Article 250.94 of the U.S. National Electric Code (NEC). Thus, in this example embodiment the structure 12 could be a metal housing member of an electrical meter socket enclosure located on the exterior side of a residence, or an electrical equipment enclosure (such as a circuit breaker box) for example.
The connector assembly 10 generally comprises a bus bar 14 and a combined electrical connection and mounting post assembly 16. The bus bar 14 comprises a frame 18 and set screws 20. The frame 18 is a one-piece member comprised of electrically conductive metal. However, the frame 18 could comprise more than one member. The frame 18 comprises a middle with an aperture 22 and wire receiving holes 24 on opposite sides of the aperture 22. Threaded screw holes 26 intersect with the wire receiving holes 24. The set screws 20 are screwed into the threaded screw holes 26. The set screws 20 can clamp electrical wires or intersystem bonding conductors 4 (see
The combined electrical connection and mounting post assembly 16 generally comprises a post member or post connector 28, a pressure assembly 30, and a fastener 32. The post connector 28 comprises a one-piece member made of electrically conductive material, such as metal. However, the post connector 28 could comprise more than one member. A first end 34 of the post connector 28 has a slot 36 and arms 38. The arms 38 are located on opposite sides of the slot 36 and have exterior sides with screw threads. The slot 36 is sized and shaped to receive a portion of an electrical conductor 2 (see
A second end 40 of the post connector 28 is sized and shaped to connect to the fastener 32. In this embodiment the second end 40 has threads and the fastener 32 is a threaded nut. Thus, the nut 32 can be screwed onto the second end 40. However, in an alternate embodiment any suitable type of connection of the fastener 32 to the post connector 28 could be provided. A middle section 58 of the post connector 28 has a hexagon outer perimeter shape to facilitate holding the post connector 28 stationary when the fastener 32 is attached and when the pressure assembly 30 is attached. However, any suitable shape could be provided.
The pressure assembly 30 generally comprises a pressure bar 42 and a fastener 44. The fastener 44 has a general threaded nut shape and is sized and shaped to screw onto the arms 38 of the post connector 28. The pressure bar 42 is rotatably connected to the fastener 40 inside the center aperture of the fastener. The pressure bar 42 is sized and shaped to longitudinally slide in the slot 36 as the fastener 44 screws onto the arms 38. A bottom end 46 of the pressure bar 42 is configured to press the conductor 2 against the clamping surface 48 of the post connector 28 to mechanically and electrically connect the conductor to the first end 34.
The first end 34 and the pressure assembly 30 form a connection section 31 for connecting the electrical conductor to the assembly 16. However, in alternate embodiments, a different structure or configuration could be provided for this purpose. In an alternate embodiment, the slot 38, arms 38 and pressure assembly 30 could be replaced by an alternative type of conductor attachment mechanism.
In this embodiment the assembly 10 also comprises a plate 50, a washer 52, and a gasket or seal 54. Referring also to
The assembly 10 is connected to the structure 12 with the post connector 28 extending through the hole 56. More specifically, the plate 50 is located at an exterior side of the structure 12, and the washer 52 and seal 54 are located at the interior side of the structure 12. The post connector 28 extends through holes in the plate 50, washer 52, and seal 54. The second end 40 of the post connector 28 is sized and shaped to pass through the aperture 22 in the bus bar frame 18. With the plate 50 between the bus bar frame 18 and the exterior side of the structure 12, when the fastener 32 is screwed onto the post connector 28, the members 18, 50, 52, 54 are sandwiched together between the fastener 32 and the bottom side of the middle section 58 in a fixed, stationary assembly on the structure 12 at the hole 56.
As shown in the figures, the main ground conductor 2 can be attached to the assembly 10 with the connection at 31 located inside the structure 12. The structure 12 has a hole 33 to allow the conductor 2 to pass out of the structure for connection to the ground outside a house for example. The bus bar 14 can have the intersystem bonding conductors 4 separately connected thereto outside of the structure 12. Thus, the structure 12 does not need to be opened to connect the wires 4 to the conductor 2 and to ground. The assembly 10 also electrically connects the structure 12 to the conductor 2 and, thus, to ground.
Referring also to
Referring also to
The main difference between the assembly 10 as configured in the first configurations shown in
In the second configuration, the fastener 32 is located at the inward facing side of the plate 50 such that the frame 18 and plate 50 can be sandwiched between the fastener 32 and the middle section 58. The structure 13 in this example is the exterior side of a house. Thus, the plate 50 can be fixedly, stationarily attached to the exterior side of a house directly by the screws 66. The main ground conductor 2 can be attached to the assembly 16 by the pressure assembly 30. The intersystem ground conductors 4 can be separately connected to the bus bar 14 by the set screws 20. In an alternate embodiment, the hole 60 could be threaded to screw onto the threaded second end 40 of the post connector 28. Thus, the fastener 32 might not be needed in this second configuration.
One embodiment of the invention can provide a dual function grounding and bonding connector device. The first function allows the connector to become an interface between the ground wire on the inside of a metal electrical enclosure and the intersystem ground wires on the outside of the enclosure. The second function allows the same device to be alternatively mounted directly to a structure, such as a wall of a residential building for example, and allows a connection between the ground electrode connector and intersystem ground wires. The embodiment can be designed to also meet the requirements of 2008 NEC article 250.94.
In a first configuration, as shown in
Referring also to
Similar to the embodiment shown in
The main ground conductor 2 can be attached to the assembly 72 with the connection located inside the structure 12. The bus bar 14′ can have the intersystem bonding conductors 4 separately connected thereto outside of the structure 12. Thus, the structure 12 does not need to be opened to connect the wire 4 to the conductor 2 and to ground. The assembly 72 also electrically connects the structure 12 to the conductor 2 and, thus, to ground.
Referring also to
As seen in
In a first configuration, as shown in
With the alternative or multi-configuration capability of the connector assembly, an installer in the field can use the connector assembly to attach to different structures, in different modes of connection, and in different configurations of assembly based upon the desired mode of connection and/or structure being connected to.
It should be understood that the foregoing description is only illustrative of the invention. Various alternatives and modifications can be devised by those skilled in the art without departing from the invention. For example, features recited in the various dependent claims could be combined with each other in any suitable combination(s). In addition, features from different embodiments described above could be selectively combined into a new embodiment. Accordingly, the invention is intended to embrace all such alternatives, modifications and variances which fall within the scope of the appended claims.