PhysicalConnectivity/src/main/resources/data/phycon/recipes/cable.json

{
  "type": "minecraft:crafting_shaped",
  "pattern": [
    "CCC",
    "TRT",
    "CCC"
  ],
  "key": {
    "C": {"tag": "minecraft:carpets"},
    "T": {"item": "phycon:twisted_pair"},
    "R": {"item": "minecraft:redstone"}
  },
  "result": {
    "item": "phycon:cable",
    "count": 3
  }
}