For my Electrical Audiophile friends here....
Background of this....
I wish to add 3 20amps to my family room, where wiring to main panel.
My main panel is over done with only 8 slots, 4 being used for 2 100amp sub panels in garage. Where the other 4 slots are feeding 5 circuits, but a quad was added to feed pool sub panel of 30amps. Many circuit breakers in my house are double where there's 2 circuits to 1 double breaker. So adding anything there would require a new main electrical panel, was my old thinking and is option #1.
My thinking now is to do this in one of the sub panels. Where I could replace one 40 amp 240ac double breaker to a 20/40/40/20 quad breaker, and using another slot have the 3 20's I needed. Option #2
Is option 1 much better then option 2, but option 2 is much cheaper.