Dear one and half scheme main aik bay ya dia main 2 circuits in out go rahy hoty hain. Aik Dia main 3 breaker hoty hain. Bus 1 side pr jo breaker hy wo line ka controlling breaker hy or bus 2 side pr jo breaker hy wo transformer ka controlling breaker hy jo middle breaker hy wo line or transfer dono ko share kar raha hota hy