Electrical engineers document a line set of conductors in schematics, specifying gauge, insulation, routing
https://chancedtme862.publishlane.com/posts/mini-split-line-set-requirements-for-small-apartments
Electrical engineers document a line set of conductors in schematics, specifying gauge, insulation, routing, and separation to meet ampacity, noise immunity, and EMC standards in complex assemblies.