2 Way Lighting Diagram Using 3 Core. Most likely to be found with wires in conduit. This cable consists of three cores brown grey and black which are all line colours and an earth wire.
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For wiring a two way switch 3 core earth cable is used. A 2 way switch wiring diagram with power feed from the switch light. This method can be dangerous if the neutral from the ceiling rose is connected to an alternate junction box on a different circuit.
Most likely to be found with wires in conduit.
Connect the line brown wire coming from the light together with the 3 core earth cable black wire in to the l1 terminal of the two way switch. Usually the third wire passes the middle intermediate switch but is joined in a separate terminal block. Three core and earth cable. The ground wires are not shown on these diagrams to save space and make for easy viewing.
