The NSI GLC-4DB Direct Burial Copper Ground Connector makes quick work of grounding copper conductors in a variety of outdoor applications. The copper body and stainless-steel screws are cULus Listed for direct burial in both earth and concrete when used with copper wiring. This connector’s lay-in lug design allows for greater flexibility when securing wires and accommodates conductors in the range of 4 to 14 AWG. The connector has a temperature rating of 90 °C and a voltage rating of 600V. cULus Listed 467 for grounding and bonding. UL A Listed 486 wire connector. Stock products you can rely on—stock NSI.