Morris Products 90552 Copper Mechanical Lug 14-4 Awg

Product Description

The MORRIS PRODUCTS 90552 is a copper mechanical lug designed for making secure, low-resistance electrical terminations on copper conductors ranging from 14 AWG to 4 AWG. Mechanical lugs use a set-screw clamping mechanism to grip the conductor without requiring crimping tools, making them a practical choice for panel terminations, loadcenters, and distribution equipment. Licensed electricians and apprentices working on residential and light commercial wiring installations are the primary users of this fitting. The all-copper construction ensures compatibility with copper wiring systems and supports reliable, long-term conductivity at the termination point.

This lug is suited for use in residential service panels, commercial distribution boards, and industrial control enclosures where copper conductors in the 14 AWG to 4 AWG range are terminated. It is commonly installed on bus bars, neutral bars, and equipment ground lugs in loadcenters and panelboards. The mechanical set-screw design eliminates the need for a hydraulic or ratchet crimp tool, simplifying installation in tight spaces or retrofit applications.

Key Features

• Accepts copper conductors from 14 AWG to 4 AWG
• Copper construction for use with copper wiring systems
• Mechanical set-screw termination — no crimping tool required
• Suitable for panel, loadcenter, and distribution equipment terminations
• Compact design fits standard enclosure mounting points

Compatibility

Designed as an OEM-style mechanical lug replacement for use with copper conductors in residential and commercial electrical panels and distribution equipment accepting 14 AWG to 4 AWG wire range lugs.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC). De-energize and lock out the panel or equipment before installing or replacing any lug. Strip the conductor to the appropriate length per the lug barrel depth and tighten the set screw to the torque value marked on the lug or specified in the equipment manufacturer instructions. Verify conductor seating before re-energizing.

Technical Specifications

• Wire Range: 14 AWG to 4 AWG
• Conductor Material Compatibility: Copper
• Termination Type: Mechanical set-screw

Standard Information

• Brand: MORRIS PRODUCTS
• Manufacturer Part Number: 90552