I have a house built in 1965 with 100A service.
Looking to pull 2 separate branches off the panel, 1 to each bathroom for a in-ceiling vent/heater. Per the manufacturer information on the panel door, adding a twin breaker into one of the available slots is allowed.
Question though - how do you guys get to the panel knockouts to bring in another romex line? Exterior of house is stucco, interior drywall. Peak of roof comes down over where the service panel is so attic access is impossible to drill from there.
Assuming that I need to open the drywall, it looks like the meter has to be pulled to be able to install a strain relief and then romex through the top of the panel. Coming in from the bottom would alleviate needing to call the Edison to pull the meter, but is this allowed?
So how do you pro's add a branch circuit to a panel in a finished house?