One of the fields of engineering that you may choose to specialise in is electrical engineering. Electrical engineers are often called in to work on buildings after the initial framework has been built. They are the ones who will handle running all of the electrical cables through a new building. They are in charge of wiring light fixtures and switches, putting in electrical outlets, hooking the air conditioning and heating system into the building’s electrical grid, and even setting up the fire alarm system. Often, they work with the local power company to connect the building to the city’s power grid.