A power distribution box is disclosed. The power distribution box may include a housing including one or more panels. The one or more panels may define a cavity. The power distribution box may include one or more outlets coupled to one or more portions of the one or more panels of the housing. The power distribution box may include one or more output plugs configured to receive one or more power distribution whips. The one or more output plugs may be configured to couple to one or more portions of the one or more panels of the housing. The power distribution box may include one or more circuit breakers coupled to one or more portions of the one or more panels of the housing. The power distribution box may include at least one power whip coupled to an output plug of the one or more output plugs.

A distributed energy resources compartment for an electrical panel is pre-wired for installation of a photovoltaic system for a residence. The compartment is mounted on a back plate in the interior of an electrical cabinet. A pre-wired connection within the compartment is configured to connect to a solar circuit breaker within the electrical cabinet, connected as a back-feed circuit breaker to an electrical panel. An opening on a backside of the compartment adjacent to the back plate of the electrical cabinet, is configured to receive connections within the compartment from a solar inverter, through the back plate of the electrical cabinet when the solar inverter is mounted to the back plate of the electrical cabinet.

A kit includes one or more pairs of matching color-coded attachment members and tags. The attachment member is configured to be selectively retained to an electrical wire entering an electrical service panel. The corresponding color-coded tag is configured to be attached, such as through magnetic means, to a door of the electrical service panel. The tag includes pre-printed text thereon, which provides descriptive information regarding the electrical circuit formed by the wire to which the attachment member is associated. As such, the color-coding allows a homeowner or technician to easily identify which electrical circuit is controlled by a particular electrical circuit breaker.

A gripper for the automated wiring of electrical components of an electrical switchgear, the gripper having at least two gripper fingers, wherein the gripper fingers delimit between them a cable guide corridor, the passage cross-section of which is bounded at a distal end of the gripper fingers by opposing gripper jaws of the gripper fingers and, with respect to the distal end, is bounded further proximally by opposing cable drives of the gripper fingers, the two gripper fingers being adjustable with respect to one another in an adjustment direction which corresponds to a cross-sectional direction of the passage cross-section in order to vary the passage cross-section via a linear adjustment unit. A corresponding robot and a corresponding method are further described.

A hydraulic fracturing system for fracturing a subterranean formation includes a primary switchgear arranged on a support structure. The system also includes a secondary switchgear, arranged on the support structure, the secondary switchgear positioned separately from the primary switchgear and within an enclosure, the secondary switchgear receiving an electrical input from the primary switchgear and including an plurality of feed connections for supplying electrical power to a plurality of fracturing equipment.

A switching system includes a power switching section, a control module, and a casing. The power switching section includes at least one power transfer switch and a power selector. The power selector opens and closes the at least one power transfer switch. The control module includes one or more supply transfer switches and a supply controller. The supply controller opens and closes the one or more supply transfer switches. The casing houses the power switching section and the control module.

A modular retainer assembly is presented herein. The modular retainer assembly includes a first retainer module defining a flexible first retaining finger and a second retainer module that is distinct from and joined to the first retaining module. The second retainer module defines a flexible second retaining finger. When the first and second retainer modules are mated together, the first retaining finger is arranged opposite the second retaining finger. The first and second retaining fingers are configured to receive and retain an elongate article, such as a wire cable, between them.

An apparatus provides a single split-bus electrical panel with back-feed circuit breakers arranged to allow connection of a Microgrid Interconnection Device (MID) for isolation of a critical loads section from a standards loads section during back-up operation due to a utility power outage. A first panel section of the split-bus electrical panel supplies power to non-critical standards loads in a residence. A second panel section of the split-bus electrical panel supplies power to critical loads in the residence, which must continue to be powered during a utility power outage.

A multi-function cabinet housing electrical equipment. The multi-function cabinet has four compartments. Each compartment is configured to house a different type of electrical equipment. The electrical equipment may be high-voltage electrical metering and distribution components, high-voltage control electronics, battery backup, wireways, low-voltage electronics, or a combination thereof. The multi-function cabinet contains wireways. The compartments of the multifunction cabinet are accessible using doors, which are fastened by locks. The cabinet contains a ventilation system with fans, vents, and filters.

An apparatus provides a single split-bus electrical panel with back-feed circuit breakers arranged to allow connection of a Microgrid Interconnection Device (MID) for isolation of a critical loads section from a standards loads section during back-up operation due to a utility power outage. A first panel section of the split-bus electrical panel supplies power to non-critical standards loads in a residence. A second panel section of the split-bus electrical panel supplies power to critical loads in the residence, which must continue to be powered during a utility power outage.