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The ABB TCU30 is a large-base universal raintight hub with a 3-inch diameter, designed for conduit entry applications in electrical installations. It provides a weathertight connection point where conduit meets an enclosure, panel, or junction box, keeping moisture out of the electrical system. Licensed electricians install this fitting as part of wet or damp location wiring systems. Its universal design accommodates a wide range of installation scenarios, making it a practical stock item for service trucks and panel work.
This hub is suited for use in both residential and commercial electrical installations where raintight conduit terminations are required. Typical applications include service entrance equipment, outdoor panels, meter bases, and enclosures exposed to weather. The large-base construction provides a broad seating surface against the enclosure wall, supporting a secure, watertight seal at the entry point.
Designed as an OEM-style universal replacement raintight hub for 3-inch conduit entry points on electrical enclosures, panels, and junction boxes in wet or damp location applications.
Installation should be performed by a licensed electrician in accordance with applicable NEC requirements for wet and damp location fittings. De-energize all circuits and lock out the panel or enclosure before beginning work. Ensure the mating surface of the enclosure is clean and free of debris before seating the hub to maintain a proper raintight seal. Do not overtighten during installation, as this may damage the fitting or compromise the seal.
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