I'm wiring my shed for 2x120v breakers to serve 2x120v circuits. For the house subpanel I first bought a tandem 20A breaker. I learned that I could not use that because it would overload the neutral since they would both have the same phase. Someone told me I needed 2x20A with a connecting handle for some code reason. I bought one. It has 2 hot connectors. Will this give me 2x240 or 2x120? I want 120v. Do I need to exchange this for 2 single 120v breakers and will that be code:huh:? Thanks.