Hi everyone, just curious about some different things ive read on the internet, there is 3 switches, 2x2 way and 1xintermediate. in the 1st 2 way coming down from the light, the brown coming down is in l2 with the brown coming up that connects the intermediate switch. the black wire coming up goes into the common in the 2 way switch. in the intermediate it says the grey go in the l1 and l2 and the brown go in the other l1 l2 whilst the black ones are in the connector blocks. i thought it was the grey and black in the l1's and l2's and the browns in connector blocks. thanks for your time to the ones who help :).i have an exam on it tomorrow and thats 1 thing ive read on the internet that i dont think was right.
The circuit you describe is called a 4 way switch circuit. At the first switch in the circuit the power feed is terminated at the common terminal of the switch and the two travelers ( one red and one black ) of the interconnecting wire connect to the other two terminals. At the center switch of the circuit which is called a 4 way switch ( there can be any number of 4 way switches in a circuit but they must always be in the middle of the circuit ) the input travelers connect to the bright terminal screws and the output travelers connect to the dark terminal screws (typically top-top and bottom-bottom) then at the last switch in the circuit (again a 3 way switch) the travelers connect to the two terminals which are the same color and the output to the light connects to the common terminal. At each switch box the neutral (White) wire is wire nutted to the white wire of the next set of wires. And the bare copper ground wire is both bonded ( Compression bond ) to the ground wire of the next cable AND terminated to the green grounding screw in the box if it is a metal box AND terminated to the green grounding screw on the yoke of the switch.
