Ventilation system for a network restaurant. The restaurant chain is so large that the name of the manufacturer of the ventilation system coincides with the name of the restaurant chain. It was specially designed for them. The task was simple — to create three-phase cables with plugs for the two electric motors (one main and one backup) and to attach a three-phase socket to the installation, which will be connected to the power supply. In the end, it took 2.5 hours of work. Now the system is ready for transport to the roof of the restaurant.