Abstract: Aspects of the present disclosure involve systems, methods, and the like, for an automatic transfer switch (ATS) of a power system. The ATS allows for switching between two or more power systems while preventing back-feeding of the power systems. To provide the safety features of the ATS, a safety circuit and control board may be implemented with the magnetic latching relays to control the actions of the latching relays and provide the switching function of the ATS. In one particular embodiment, the safety board comprises one or more electromechanical relays positioned between the controlling electronics of the control board and the magnetic latching relays. The safety board design contains measures to ensure it still functions if one of the disconnect switches is not connected, if one of the connections to a first load phase, a second load phase or neutral is lost and if the main control board is not connected.

Abstract: Aspects of the present disclosure involve systems, methods, and the like, for an automatic transfer switch (ATS) of a power system. The ATS allows for switching between two or more power systems while preventing back-feeding of the power systems. To provide the safety features of the ATS, a safety circuit and control board may be implemented with the magnetic latching relays to control the actions of the latching relays and provide the switching function of the ATS. In one particular embodiment, the safety board comprises one or more electromechanical relays positioned between the controlling electronics of the control board and the magnetic latching relays. The safety board design contains measures to ensure it still functions if one of the disconnect switches is not connected, if one of the connections to a first load phase, a second load phase or neutral is lost and if the main control board is not connected.

Abstract: A one-piece power meter socket to circuit breaker connection structure includes an elongated trunk section connecting a lower spade section with a forwardly offset connection plate at an upper end. The connection plate is joined to the trunk section by an angled extension section. The connection plate has an aperture to receive a fastener to connect it and a meter jaw to a meter jaw base. The spade section includes a pair of laterally spaced, forwardly projection breaker receiving spades for reception in a receptacle of a circuit beaker. The connection structures are used in pairs with an insulating circuit breaker base to connect load-side meter jaws of a power meter socket to spade receptacles of a plug-in type of circuit breaker. The one-piece connection structure is formed of a sheet of metal having a thickness equal to the thickness specified for the spades engaged by the circuit breaker.

Abstract: An integral riser structure for a watt-hour meter enclosure to provide a mounting structure for a pair of meter jaw assemblies includes a pair of laterally spaced riser walls formed integrally with a back wall of the enclosure and positioned in forwardly spaced relation to the back wall. The riser walls are separated by a recessed wall positioned in a recessed plane located between the plane of the riser walls and the plane of the back wall. The riser walls include holes to receive fasteners to secure the meter jaw assemblies to the riser walls.

Abstract: An improved meter jaw assembly includes a one-piece meter jaw member formed by extrusion and including a pair of resilient jaw contacts extending from a base tab which also has a U-shaped wire receiver extending therefrom. Inner surfaces of the receiver are grooved to receive a slide nut with a threaded slide screw to clamp the end of a power cable therein. The jaw members include mounting keys to secure them to a mounting block. In a mold-in embodiment of the assembly, a pair of jaw members have mounting keys molded into the mounting block. In a slide-in embodiment, a pair of jaw members are retained in slide-in channels within the mounting block.

Abstract: A one-piece power meter socket to circuit breaker connection structure includes an elongated trunk section connecting a lower spade section with a forwardly offset connection plate at an upper end. The connection plate is joined to the trunk section by an angled extension section. The connection plate has an aperture to receive a fastener to connect it and a meter jaw to a meter jaw base. The spade section includes a pair of laterally spaced, forwardly projection breaker receiving spades for reception in a receptacle of a circuit beaker. The connection structures are used in pairs with an insulating circuit breaker base to connect load-side meter jaws of a power meter socket to spade receptacles of a plug-in type of circuit breaker. The one-piece connection structure is formed of a sheet of metal having a thickness equal to the thickness specified for the spades engaged by the circuit breaker.

Abstract: An integral riser structure for a watt-hour meter enclosure to provide a mounting structure for a pair of meter jaw assemblies includes a pair of laterally spaced riser walls formed integrally with a back wall of the enclosure and positioned in forwardly spaced relation to the back wall. The riser walls are separated by a recessed wall positioned in a recessed plane located between the plane of the riser walls and the plane of the back wall. The riser walls include holes to receive fasteners to secure the meter jaw assemblies to the riser walls.

Abstract: An improved meter jaw assembly includes a one-piece meter jaw member formed by extrusion and including a pair of resilient jaw contacts extending from a base tab which also has a U-shaped wire receiver extending therefrom. Inner surfaces of the receiver are grooved to receive a slide nut with a threaded slide screw to clamp the end of a power cable therein. The jaw members include mounting keys to secure them to a mounting block. In a mold-in embodiment of the assembly, a pair of jaw members have mounting keys molded into the mounting block. In a slide-in embodiment, a pair of jaw members are retained in slide-in channels within the mounting block.