In June 2012, UL learned of compatibility issues when Classified Fire-Resistive Cables were used in electrical circuit protective systems where zinc was used as in interior coating in steel conduits, raceways and other system components. Specifically, at high temperatures the zinc coating interacted with the copper conductor creating a brass alloy that melted at a lower temperature than the copper conductors alone, thereby affecting the integrity of the electrical system. The presence of zinc compromised the electrical circuit protective systems and caused them to not conform to UL2196.
Keep Reading
Champion Fiberglass® Named a CompositesWorld Top Shop for 2024
The origins of fiberglass date back to the ancient Greeks. Today fiberglass is used for a variety of applications from…
Get to Know Research and Development Engineer Blake Rogers
He’s got a diverse background in engineering, is new to Texas and can juggle. Meet Blake Rogers.
Electrical Conduit Cost Savings: A Must-Have Guide for Engineers & Contractors
To help identify cost savings that don’t cut corners on quality, Champion Fiberglass developed a free resource for engineers and…