When i opened my box last night i noticed that some of the breakers have 2 black wires running to them while others only have 1. Are there 2 circuits running off of 1 breaker. These are Square D QO breakers and are also not tandems. The breakers do have a slot on each side of the screw for wire to be connected.
If it is 2 circuits on 1 breaker would i be able to add a new circuit to an existing lightly used breaker?
Thanks
If it is 2 circuits on 1 breaker would i be able to add a new circuit to an existing lightly used breaker?
Thanks