A must-have for all lineworkers. Detailed information, charts, pictures and how-to's for transformers, rigging, knots, rope capacities and many more. Created by a Journeyman lineman, this app is useful for lineman and apprentices. Home screen. Knots & Rope Capacities. Rigging. Transformers. Useful Information. Linemantrainer. Com. Danger Men, Half Million Volt Workers video.