Commercial electricians are responsible for ensuring that electrical systems meet local and national building codes and regulations.
They also test electrical systems to ensure they are working properly and safely.
They test and inspect the work: Once the new wiring has been installed, the electrician will test all of the outlets, switches, and light fixtures to ensure that they are working properly.
Afterwards they will also conduct a thorough inspection of the entire electrical system to ensure that it meets all local building codes and is safe for use.