I have a 100 amp panel, during a remodel the gas appliances were replaced with electric and now the load calcs put it at about 105 amps. I've heard about way to power 2 loads or appliances with 1 breaker. The application I heard about was for an electric car charger being added to a panel that didn't have enough capacity. This device allows only one appliance to draw power at a time. I'm hoping to have the clothes dryer and a small oven connected in this manner. Anyone know anything about this?
Do you really understand how to determine the actual LOAD on the panel? You don't just add up the values of the breaker handles. I say that because your question about putting two loads on one breaker seems to imply that this will make a difference. It will not (and by the way you cannot legally put two wires on the terminals of most breakers).
Determining the loading on a service is a complex issue involving knowing the ACTUAL wattage of major appliances, legal limits to loads on outlet circuits, and what's called a "diversity factor" that is a method of acknowledging that not all circuits will be on and drawing full power at the same time. If you are concerned, study up on how this is done.