Review on Schneider Electric QOT1515CP Square Single Pole by Louis Turley

QO Panel 30 Places/40 Circles 200A and panels from other manufacturers that accept tandem switches are manufactured so that only a certain number of tandem switches can be used accustomed to that the homeowner does not overload his panel with additional circuits. This switch has a catch because the switch can only go to the last 10 digits below in this QO field. If you don't have a panel that recommends or accepts tandem switches, you may run into an electrical code problem when selling your home. There is one caveat to note. A double switch connects both circuits on the same phase. Some older homes and some commercial buildings used two live wires on a neutral wire, which may have loaded that neutral wire with an unbalanced load on two circuits. I hope this helps someone.