The Penn-Union KP-4 is a bronze ground clamp designed to connect grounding conductor to water pipe or copper tube in larger-diameter applications. Manufactured from high-strength copper alloy for conductivity and durability, the KP-4 is built for reliable bonding performance in electrical grounding systems.

This clamp fits 2-1/2" to 4" water pipe and accepts conductor sizes from 10 AWG solid to 2 AWG stranded. Zinc-plated steel screw hardware helps provide a secure hold during installation.

For contractors, maintenance teams, and electrical professionals working on commercial or industrial grounding jobs, the KP-4 delivers a straightforward solution from a long-established U.S. manufacturer.

Key Features:

• Bronze ground clamp for water pipe or copper tube bonding
• Fits 2-1/2" to 4" pipe range
• Accepts 10 AWG solid to 2 AWG stranded conductor
• Cast copper alloy body for high conductivity
• Zinc-plated steel screw hardware
• Standards: UL 467, CSA C22.2 No. 41

Recommended Applications

• Grounding and bonding to water pipe
• Copper tube grounding connections
• Commercial electrical installations
• Industrial facility grounding work
• Retrofit or maintenance grounding upgrades