pipe help {sorry bad at closings}

It is super tedious to do (even worst if you want to do it with 3D Block Models)

Currently you can do it hard way only with local variable: make 2 blocks one on and one off make that off block will look for another cabel or generator and for on block make it check if touching block has power

Or you can wait for MCreator Forge Energy update 

MCreator is planning to add Forge Energy which will allow to produce energy and transport it in cable also will allow to build machines that uses the energy, it will be compatible with other mods that are using energy like Tech Reborn, Thermal Expansion etc