I am looking to add a new breaker and am out of physical space in the box currently.
The box currently has 4 tandem breakers, so I figured I would just replace a single with a tandem. (Based on info from this thread, physical space is the limitation.) When shopping for a 2-20 tandem breaker, one of the guys helping me at the store told me my box is super old, and I should just upgrade it.
It seems parts for this box might be harder to acquire compared to a new box, but should I legitimately be considering upgrading my box just cause its old?