Eaton Crouse-Hinds HGLL10 250 Grounding Bushing - NEC/CEC

Part Number: HGLL10 250
Eaton Crouse-Hinds logo
Manufacturer
Eaton Crouse-Hinds
Part number
HGLL10 250

Quick Summary

HGLL10 250 grounding bushing provides secure grounding for rigid/IMC conduit in electrical enclosures. This design addresses common concerns with unstable ground bonds, vibration, and heat-related degradation that can lead to downtime. It is aligned with NEC/CEC standards and is suitable for Ordinary/Non-Hazardous Location installations, with a 150°C rating and a robust malleable iron body. The aluminum lug simplifies conductor termination for large conductors (250 kcmil-#6 AWG) while maintaining a compact footprint, delivering reliable performance in industrial environments and scalable for panel upgrades or retrofits.

Product Information

Extended Description

HGLL10 250 Eaton Crouse-Hinds: Eaton Crouse-Hinds series HGLL grounding bushing, Rigid/IMC, Aluminum lug, 250 kcmil-#6 AWG, Malleable iron, 150°C, Threaded, 4"
Product Name
Eaton Crouse-Hinds series HGLL grounding bushing
Catalog Number
HGLL10 250
UPC
784564113238
Product Length/Depth
5.06 in
Product Height
1.13 in
Product Width
5.06 in
Product Weight
1.23 lb
Area classification
Ordinary/Non-Hazardous Locations
Standards type
NEC/CEC
Conduit type
Rigid/IMC
Temperature rating
150°C
Lug material
Aluminum
Thread
Threaded
Trade size
4"
Lug size
250 kcmil-#6 AWG
Material
Malleable iron
Feature → Business Impact → Application: Threaded connection and rigid/IMC compatibility enable quick, vibration-resistant installations with secure grounding bonds, reducing commissioning time and maintenance calls for panels and junction boxes. This improves system reliability in demanding environments where downtime costs exceed the price of a high-grade bushing. Application: panels, service entrances, and process machinery where dependable ground continuity is critical. Feature → Business Impact → Application: Aluminum lug paired with a 250 kcmil-#6 AWG capacity supports large feeders while lowering weight, simplifying handling during field installations and service upgrades. Application: feeders and main grounding paths in industrial facilities where weight savings improve install efficiency. Feature → Business Impact → Application: Malleable iron construction delivers mechanical strength and durability under vibration, impact, and temperature cycling, extending service life and reducing replacement frequency. Application: heavy-duty enclosures and outdoor-rated or interior spaces with frequent maintenance. Feature → Business Impact → Application: 150°C temperature rating expands suitability to high-heat environments such as paint lines, brazing zones, or metal fabrication, ensuring grounding integrity. Application: high-temperature process areas. Feature → Business Impact → Application: 4" trade size with precise dimensions (5.06" length, 1.13" height) ensures compatibility with standard IMC/rigid conduit fittings and enclosure footprints, reducing retrofit risk. Application: equipment upgrades and new builds in standard electrical rooms. Feature → Business Impact → Application: NEC/CEC compliance and documented area classification provide regulatory assurance, simplifying approvals and preventing rework during audits. Application: compliance-driven installations in non-hazardous locations across industrial facilities.

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FAQs

Begin by selecting the correct 4" trade size bushing for your IMC conduit. Align the conduit with the threaded bushing, thread the assembly into the malleable iron body, and tighten using standard tools to manufacturer torque guidelines. Use the aluminum lug to terminate 250 kcmil-#6 AWG conductors, ensuring a snug, corrosion-resistant bond. This approach minimizes grounding resistance and reduces rework due to loose connections in challenging environments.
HGLL10 250 supports conductors up to 250 kcmil and #6 AWG in a single lug configuration, with an aluminum lug material for reduced weight and ease of termination. The 4" trade size and threaded connection are sized for reliable grounding in rigid/IMC systems, making it suitable for large feeders and main grounding paths in industrial installations.
Yes. The grounding bushing is designed for Ordinary/Non-Hazardous Locations, aligning with NEC/CEC standards. Its documented compliance streamlines regulatory approvals, reduces the risk of non-conformance during audits, and supports compliant grounding practices in standard industrial facilities.
The HGLL10 250 is supported by NEC/CEC compliance and area classification data for Ordinary/Non-Hazardous locations. UL certification reports for US and Canada are available, and an Eaton specification sheet provides detailed installation and performance data. This documentation supports rigorous quality and regulatory validation during project reviews.
The combination of malleable iron body, aluminum lug, and a 150°C rating delivers durable grounding resilience against vibration, heat, and mechanical stress. This lowers maintenance frequency, reduces downtime from grounding issues, and improves long-term reliability for large feeder connections, contributing to a faster return on investment in high-demand facilities.