The Megger 6220-805 earth test cable set is a replacement cable set for conducting ground resistance tests with a Megger DET3 series ground resistance tester (sold separately). The set includes a 15m red wire, 10m yellow wire, and 4m green wire to replace the original wires included with the tester. The 6220-805 is an accessory for use with a Megger DET3 series ground resistance tester.

Megger manufactures equipment for cable fault locating, protective relay testing, telecommunications and data integrity, and power quality testing under multiple brand names, among them Megger, Biddle, States, and AVO. The company, founded in 1889, is headquartered in Dover, England, and meets International Organization for Standardization (ISO) 9001:2008 standards.