Thomas Betts 3905-TB U-bolt Rod Clamp 4 to 4/0 Awg

Product Description

The THOMAS BETTS 3905-TB is a bronze U-bolt rod clamp designed for grounding and bonding applications in electrical installations. It accommodates wire sizes from 4 AWG through 4/0 AWG and is compatible with pipe sizes ranging from 4 inches to 5 inches. The bronze construction provides corrosion resistance suited to both indoor and outdoor environments. This clamp is UL Listed under UL File E3060 and CSA Certified, meeting the standards required for code-compliant electrical grounding work. Licensed electricians and electrical contractors are the primary installers of this fitting in commercial and residential systems.

The 3905-TB is used wherever a reliable mechanical connection between a grounding conductor and a rod or pipe electrode is required. Typical applications include grounding electrode connections at service entrances, bonding of metallic piping systems, and equipment grounding in both new construction and retrofit projects. Its U-bolt design allows secure clamping around round pipe or rod stock within the stated size range.

Key Features

• Accepts wire sizes from 4 AWG to 4/0 AWG for broad conductor compatibility
• Compatible with pipe sizes from 4 inches to 5 inches in diameter
• Bronze material provides corrosion resistance in damp and outdoor environments
• UL Listed under UL File E3060 for code-compliant installations
• CSA Certified for use in projects requiring Canadian standards compliance
• U-bolt design delivers consistent mechanical clamping force on rod or pipe electrodes

Compatibility

Designed for use with pipe sizes from 4 inches to 5 inches and grounding conductors from 4 AWG to 4/0 AWG. Suitable as an OEM-style grounding clamp for electrical grounding electrode and bonding applications where bronze U-bolt rod clamps are specified.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and applicable local codes. De-energize and lock out the circuit before making any grounding connections. Ensure the pipe or rod surface is clean and free of corrosion at the contact point before tightening the U-bolt hardware. Do not use with pipe or conductor sizes outside the rated ranges stated on the clamp.