Do three service entrance cables(white,red,black)mean 240v with 100amp?
My house has three service-entrance cables running into the main panel. And have two 100amp cartridge fuse side by side. I want to add a garage on the side of the house. I called several electrician to come look at the situation. They all said I have only 100amp in the house, and need to increase to 200amp in order to put one more subpanel in the house to supply electric to the garage. Since I have two hot cables coming into the house, can I split them into two 120v?