Eaton Crouse-Hinds HGLL4C Grounding Bushing - NEC/CEC
Part Number: HGLL4C
Quick Summary
HGLL4C grounding bushing from Eaton Crouse-Hinds provides secure grounding for rigid IMC conduit in industrial panels. In practice, owners wrestle with grounding points loosened or corroded under vibration, triggering downtime and malfunctions. The HGLL4C is designed for Ordinary/Non-Hazardous Locations per NEC and CEC, with a 150°C temperature rating to withstand hot enclosures and motor spaces. Its copper lug, threaded connection, and malleable iron body simplify field installs, while the 1-1/4 inch trade size and lug range of 4 to 14 AWG support common panel and conduit configurations, reducing spare parts and maintenance costs while improving compliance.
Product Information
Extended Description
HGLL4C Eaton Crouse-Hinds: Eaton Crouse-Hinds series HGLL grounding bushing, Rigid/IMC, Copper lug, #4-14 AWG, Malleable iron, 150°C, Threaded, 1-1/4"
Product Name
Eaton Crouse-Hinds series HGLL grounding bushing
Catalog Number
HGLL4C
UPC
784564113382
Product Length/Depth
2 in
Product Height
0.81 in
Product Width
2 in
Product Weight
0.2 lb
Area classification
Ordinary/Non-Hazardous Locations
Standards type
NEC/CEC
Conduit type
Rigid/IMC
Temperature rating
150°C
Lug material
Copper
Thread
Threaded
Trade size
1-1/4"
Lug size
#4-14 AWG
Material
Malleable iron
Eaton Crouse-Hinds HGLL4C 3D drawing
Crouse-Hinds series Grounding Bushings - Rigid-IMC catalog page
Grounding Bushings - Rigid-IMC Canadian certification
Grounding Bushings - Rigid-IMC Canadian certification
Eaton Specification Sheet - HGLL4C
Feature: Rigid IMC conduit compatibility with a threaded interface ensures a secure fit that resists loosening in vibration-heavy environments. Business impact: strengthens grounding reliability and reduces service calls by delivering a consistent electrical path from conduit to equipment. Application: ideal for control panels, motors, and outdoor enclosures in manufacturing facilities. Feature: Copper lug and lug size supporting #4-14 AWG conductors delivers low resistance grounding, improving fault current paths and reducing heat buildup during transients. Business impact: extends connector life, lowers maintenance costs, and enhances safety in high-load or high-dynamic systems. Application: suitable for common control wiring in industrial plants. Feature: Trade size 1-1/4 inch with a threaded interface streamlines installation, enabling quick assembly with standard fittings. Business impact: accelerates commissioning, minimizes field errors, and supports tight project schedules. Application: equipment racks and distribution panels. Feature: Malleable iron body with a 150°C rating withstands high ambient temperatures and mechanical stress. Business impact: ensures reliability in hot spaces near motors and drives, reducing replacement cycles. Application: harsh industrial environments. Feature: Compliance and location suitability with NEC/CEC alignment and ordinary/non-hazardous area classification. Business impact: simplifies procurement, reduces compliance risk, and supports safe, code-compliant installations across facilities. Application: facility-wide grounding in standard industrial codes.
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FAQs
HGLL4C is engineered specifically for rigid IMC conduit with a threaded interface. It accepts copper lugs for 4 to 14 AWG conductors and uses a 1-1/4 inch trade size to fit common panel and enclosure fittings, enabling straightforward retrofits or new installs. This compatibility reduces part variety and simplifies sourcing for field crews.
The copper lug provides a low resistance grounding path, improving fault current return and minimizing heat buildup during transients. Combined with a malleable iron body and a threaded connection, it resists corrosion and loosening in vibration. This translates to longer connector life, fewer maintenance cycles, and more reliable equipment grounding in critical control circuits.
Yes. HGLL4C is intended for ordinary non-hazardous locations under NEC and CEC standards. Its 150°C rating supports operation in hot spaces near motors and drives, while the copper lug and threaded connection help ensure consistent, code-compliant grounding across typical industrial installations.
Plan for a threaded connection and ensure the lug size matches your conductor sizing. The 1-1/4 inch trade size aligns with standard rigid IMC fittings, and the malleable iron body offers robust mechanical strength. Tighten to manufacturer specs to maintain grounding integrity and rely on the copper lug for reliable electrical contact.
Using a standardized grounding solution like HGLL4C reduces spare parts inventories, speeds installation, and lowers downtime due to grounding issues. Its durable malleable iron body and high temperature rating resist wear in harsh environments, decreasing replacement frequency and supporting long-term NEC/CEC compliance across facility-wide installations.