I live in a house built in the 50's in Maryland, US. Each bedroom contains 4 electrical outlets - configured in two 1-gang electrical boxes on opposing walls. However, with all the modern appliances, we really need more electrical outlets available in these bedrooms.
At this time, I don't want to open up the walls to install additional 1-gang boxes per modern building codes, but I know I'll have to at some point.
It's a 20A circuit. Can I just change out the current 1-gang electrical boxes for 2-gang electrical boxes?