The field of electricity is very broad, and it is not possible to create a fixed price list as the service depends on site conditions, and each location has different requirements. Therefore, it is highly recommended to get a price quote before starting any electrical work. This ensures clear coordination of expectations and capabilities for both the service provider and the client regarding the expenses. Costs for complex work like upgrading an electrical panel to three-phase can range between 5000-25000₪, including electricity company fees and electrician's work. It is crucial to assess the necessity and alternatives before proceeding with such significant work.