Two Way and Two Way and Intermediate Switches for a Domestic Lighting Circuit Connections Explained Student training aid for the connections required to wire two way and two way and intermediate switching. Video explains the connection required within two way and intermediate switches as wiring diagrams. The circuit is wired in twin and CPC cables (twin and earth cable) and 3 core and CPC cable. This video will help learners connect up 2 way and 2 way and intermediate light switches. 2 way and 2