What is the maximum number of circuit breakers allowed in an

What is the maximum number of circuit breakers allowed in an two breakers in one slot Take a look at the photo below You can see that the back of these two breakers has two completely different slots These slots go into a bus bar exclusively two slot TWO FREE AUDIOBOOKS! To get two free audiobooks from Audible, just a breaker

two slot The duplex breakers provide two single pole breakers in the space typically required for only one standard breaker These duplex, 12-Inch frame breakers

two breakers in one slot When two breakers are interconnected in various systems the simultaneous closure thereof may be dangerous, or even disastrous Thus, in a multiphase alternating second method was used to eliminate the automatic opening of the primary breakers supplying the banks All breakers under test were arranged to trip