Power source switching refers to the process of changing the source of electrical power. This can be achieved using various techniques, such as manual or automatic switching. If you wish to use a synonym for this term, you might consider using similar phrases such as 'power source changeover' or 'power source transfer'. Additionally, other similar terms that focus on altering the electrical source include 're-routing', 'switching up of power' and 'diverting power'. These can be advantageous for use in technical fields when further clarifying the specific method of power adjustment that is being employed. Ultimately, it is critical to use clear and concise language when discussing electrical power source modification.