An electrical connection box applied to a wire harness includes a casing that includes an accommodating space that is formed therein and that accommodates an electronic component, and a guiding space that is partitioned horizontally lateral to the accommodating space therein via a partition wall, and that extends in a vertical direction and guides water entered therein to a vertically downside. The casing includes a water-preventing rib that is provided in the guiding space, and that guides water guided to the vertically downside in the guiding space, in a direction of avoiding from an avoidance target portion that is positioned vertically below the guiding space.

An electrical contactor assembly includes an electrical contactor, a post in electrical communication with the electrical contactor, an insulator body, and a heat sink. The insulator body is in intimate mechanical contact with the post. The heat sink is in intimate mechanical contact with the insulator body and is in thermal communication with the electrical contactor through the post and the insulator body such that heat flowing between contactor and the heat sink flows through the post and the insulator body.

A watertight electrical compartment for use in an irrigation device can include a compartment body with a chamber, a sealing section mounted with one or more sealing rings, and external threads. A sealing cap mate with the sealing section and/or the sealing rings to seal the chamber. A cap retainer can be advanced over at least a portion of the sealing cap and can have internal threads to be screwed onto the external threads of the compartment body. The cap retainer can also have a stopping feature to keep the sealing cap in its sealed position. The watertight electrical compartment can be used in a wireless flow sensor assembly, a battery operated irrigation controller, and/or a battery-operated central controller device, to provide irrigation control, and/or sensor information, without the need for AC power.

A watertight electrical compartment for use in an irrigation device can include a compartment body with a chamber, a sealing section mounted with one or more sealing rings, and external threads. A sealing cap mate with the sealing section and/or the sealing rings to seal the chamber. A cap retainer can be advanced over at least a portion of the sealing cap and can have internal threads to be screwed onto the external threads of the compartment body. The cap retainer can also have a stopping feature to keep the sealing cap in its sealed position. The watertight electrical compartment can be used in a wireless flow sensor assembly, a battery operated irrigation controller, and/or a battery-operated central controller device, to provide irrigation control, and/or sensor information, without the need for AC power.

The present disclosure provides descriptions of electrical box assemblies for supporting heavy fixtures, such as ceiling fans, and facilitating electrical connections to the fixtures. The electrical box assembly includes an electrical box that allows a connection between the box and electrical conduits and a connection, e.g., a weatherproof connection, with a housing of the fixture. The box has an open front face to house electrical connections between the fixture and wires supplying electrical power to the box via the conduits. The box has a bottom wall and an open front face. A reinforcement member fits within the electrical box and includes a panel shaped to conform to at least a portion of the bottom wall and one or more standoffs extending toward the open front face of the box. When the reinforcement member is positioned within the box, mounting holes in the bottom wall of the box and reinforcement member are aligned to allow the box to be attached to a building structure.

A modular electrical accessory for a building has a housing for attaching to a building structure and an electrical backplane mounted in the housing. The electrical backplane is configured to be electrically wired to an electrical circuit associated with the building. A user-replaceable electrical accessory module is removably connectable by a user to an electrical bus and a control bus of the modular electrical accessory. The electrical bus enables transfer of electrical power between a connected user-replaceable electrical accessory module and the electrical backplane, while the control bus enables control signals to be communicated between a connected user-replaceable electrical accessory module and the electrical backplane for controlling delivery of electrical power to an electrical device based on the control signals

A post for holding an electrical device includes a body having an interior volume to hold the electrical device and a cover that is slidable on the body between an open position to access the volume and a closed position covering the volume.

Disclosed are an electric control box and a window air conditioner. The electric control box (200) includes a box body (210) including a bottom plate (211) and a box cover (212) that covers the bottom plate (211). The box cover (212) includes an outer box cover (500) and an inner box cover (600), and an edge of the inner box cover (600) is configured with a water blocking member (611); and the water blocking member (611) protrudes outward from the edge of the inner box cover (600) toward an edge of the outer box cover (500), and the water blocking member (611) is configured for blocking water on the outer box cover (500) from flowing into the inner box cover (600).

An electric connection box that has a function of relaying power of power supply supplied from an input-side power supply line and supplying the relayed power of power supply to an output-side load on a vehicle, that includes a first circuit unit, a second circuit unit, and an air blower configured to blow air to the first circuit unit, and in which the first circuit unit and the second circuit unit are arranged in a state of being close to each other, the electric connection box includes: a gap portion that is a space formed on a boundary between the first circuit unit and the second circuit unit; and an airflow guide portion configured to guide an airflow blown by the air blower to both the first circuit unit and the gap portion.

An electric junction box includes a housing configured to accommodate an electronic component and a lid configured to be attached to the housing to cover an opening of the housing. The housing includes a housing body configured to accommodate the electronic component, and a partition wall dividing an inner space of the housing body. The partition wall is provided with a jig pin hole extending along a direction in which the lid is attached to the housing, the jig pin hole being configured such that a pin provided on a workbench is to be inserted into the jig pin hole making the housing fixed to the workbench on which another component is to be attached to the housing.