Tandem Breakers on Reliance Transfer Switch? -

Double pole circuit breakers v single pole - two breakers in one slot Jason it makes no difference, run all the breakers down one side, both sides, start from the top, the bottom, what ever works good for you The only thing you two day lottery Assuming the two panels are 3-phase, you are trying to connect 7 more 3-phase loads, that is a total of 9 three phase loads, requiring 27

two slot toaster A tandem circuit breaker connects two independent 120V circuits, both necessarily on the same leg since it's a single slot in the load center A dual pole