Southwire 335MSS Grounding Bushing with Lay-in Lug

Product Description

The SOUTHWIRE 335MSS is a 1-1/2 inch mechanical insulated grounding bushing with a lay-in lug, designed for use in electrical conduit installations where a reliable equipment grounding connection is required. This bushing threads onto the end of rigid metal conduit or IMC, providing both insulation protection for conductors at the conduit termination point and a dedicated lay-in style lug for securing a grounding conductor. It is installed by licensed electricians during panel, junction box, or equipment enclosure terminations where code-compliant grounding continuity must be established.

The 335MSS is suited for commercial and industrial electrical installations using 1-1/2 inch rigid metal conduit or intermediate metal conduit. It is commonly installed at panelboards, switchgear enclosures, pull boxes, and similar termination points where a grounding bushing with an integral bonding lug is required by the NEC. The lay-in lug design allows for fast, tool-assisted grounding conductor termination without threading the wire through a small hole.

Key Features

• 1-1/2 inch trade size fits standard rigid metal conduit and IMC threads
• Integrated lay-in lug provides a secure landing point for the grounding conductor
• Mechanical grounding bushing design ensures bonding continuity at conduit terminations
• Insulated interior throat protects conductor insulation at the conduit end
• Stainless steel construction offers corrosion resistance in demanding environments

Compatibility

Designed as an OEM-style replacement and standard-fit grounding bushing for 1-1/2 inch rigid metal conduit and IMC terminations in commercial and industrial electrical systems.

Installation Notes

Installation is performed by a licensed electrician in accordance with NEC Article 250 grounding and bonding requirements. De-energize the circuit and verify absence of voltage before beginning work at any panel or enclosure termination. Thread the bushing onto the conduit end and tighten securely before landing the grounding conductor in the lay-in lug. Do not over-torque the lug fastener beyond the tool-feel appropriate for the conductor size being terminated.

Technical Specifications

• Trade Size: 1-1/2 inches
• Type: Mechanical Insulated Grounding Bushing with Lay-In Lug
• Weight: 25 pounds
• UPC: 75133813361

Standard Information

• Brand: SOUTHWIRE
• Manufacturer Part Number: 335MSS