COMMON VS INDEPENDENT TRIP OF QUAD

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florida-sparkey

Senior Member
Location
Pinellas Park, Florida
Occupation
Master Electrician
Hello,
I need to combine four 240V circuits in a residence onto two quad breakers. (I am changing a panel out using a 12/24 insert unit for panel change)
I am tiring to confirm my understanding of the deference between common and independent trip Eaton quad breakers.
I think of a common trip quad as basically like two connected standard 240V breakers. When one leg of one circuit trips, the breaker internally trips the other pole of the same circuit while leaving the other independent two pole circuit unchanged. Example- 1 line grounds in a water heater circuit so breaker kills both L1 and L2 lines. However the range on the other two poles is unaffected.
I think independent trip to means it is like four breakers in one package and if one pole opens, the breaker will not open ANY of the other poles even if there are handle ties.
For my use, I think I am required to use the common trip quad because they are 240V loads.
Did I go wrong in my thinking?
Thanks!!
 
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