Twin breakers

Yes, breakers are moved around all the time The slots are all identical so the breakers don't care which one they are mounted to

Twin breakers Both A and B circuits of a tandem breaker unit use the same phase, or incoming service leg corresponding to that slot 120V circuits use one leg

Yes, breakers are moved around all the time The slots are all identical so the breakers don't care which one they are mounted to

two hand poker Both “hots” need protection from overcurrent, so we use a double-pole breaker that accepts two wires instead of one These breakers are larger

That diagram denotes where it's permissible to install tandem breakers Unless it's a GE

two day lottery A tie bar physically connects the two breakers together • Locations 17, 18, 19, and 20 are empty slots and can be used for additional branch circuits

For those not familiar with the terminology, a tandem breaker fits two breakers into one slot, but it still uses only one pole on the panel bus