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.