Yeah, industrial/institutional, high voltage, multi-phase, transformers, utility-level stuff e.g. generation and transmission, etc.
Industrial automation as well.
24V / 4-20mA isn't really the same job though.
Talk to contractors in any city with a hardware startup scene and they absolutely are making a killing. Lots of 220V, 480V, miles of 120V. Transformers, machine hookups. You name it.