Terminal and Junction Boxes

Terminal boxes are used for projects that require the integration of cables from multiple instruments into one convenient location. A terminal box consists of a fiberglass or diecast aluminum enclosure with a variety of sizes and switching options.

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Operation 

There are several options available:

Switched boxes provide connection for the readout; instruments are accessed one at a time via the selector switch

Non-switched boxes allow for direct connection to the sensor

Junction boxes allow multiple cables to be incorporated into a single multicore cable

Small Terminal Box &#; Non-switching
These small terminal boxes are used to take a reading of between one and five Vibrating Wire instruments (including their integral thermistor) using one of itmsoils VW Readouts. The instrument cable from each individual Vibrating Wire sensor enters the terminal box via a sealing cable gland and is connected to a terminal block. There is a pre-made connection between the terminal block and a circular connector for use with itmsoils readout.

Terminal Box &#; Switching
Switched terminal box enclosures are made of fibreglass reinforced polyester. The enclosure comes complete with a hinged lid, cable entry glands and internal termination board. They are used to take manual readings of multiple instruments using a single readout connection point and a rotary switch.

There is a standard allowance of 12, 24 or 48 instruments.

Junction Boxes &#; Non-switching
These enclosures are made of fibreglass reinforced polyester.

The enclosure comes complete with a hinged lid, cable entry glands and internal termination board. They are used to join or extend cables en route to a terminal box or datalogger; it is common to take multiple cables into one multicore cable.

There is a standard allowance of 12, 24 or 48 instruments.

Junction Boxes &#; Switching
Switched junction boxes allow multiple cables to be integrated into a single multicore cable, as well as offering the option to take manual readings. The manual readings are taken using a single readout connection point and a rotary switch. There is a standard allowance of 12, 24 or 48 instruments.

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Applications 

Typical applications include:

• Dams
• Cuttings
• Earthwork contracts
• Structural instrumentation
• Landfill sites
• Slope stability

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No, a terminal box is not the same as a junction box. They serve different purposes and have distinct characteristics:

Terminal Box:

Terminal boxes are used for specific connections in situations where there is no need for future expansion or additional connections.

They are typically compact and designed for a specific set of connections, often in situations where the layout is fixed, and there is no plan for future changes or extensions.

Terminal boxes are generally used when the wiring or connections are intended to remain as they are without modifications.

Junction Box:

Junction boxes have a larger working area and are designed to accommodate multiple connections and wiring.

They are more versatile and are often used in situations where future expansion or additional connections might be necessary.

Junction boxes are typically used when there is a need to organize and manage various connections, and there is a possibility of changes or extensions in the future.

In summary, terminal boxes are used for specific, fixed connections, while junction boxes are more versatile and allow for multiple connections and potential future changes or expansions.

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