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Following the purchase of a new home I want to install a new light in one room. The new light fitting has the basic connection terminals for Active, neutral and earth. The existing light on the ceiling has an additional wire connected, i.e. active, neutral, earth and one other. How do I connect the new light

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  • EECS May 11, 2010

    WHat it the extra wire connected to? Generally, you only need three wires and you have identified them correctly. I have seen 220 V AC systems with 4 wires - 2 hot wires, one neutral, and one ground. I dont know where you are writing from so I dont know your power system voltage.

  • mikeb103 May 11, 2010

    Is the additional wire originating from the fixture or the box in the ceiling? and if it's from the box in the ceiling, which of the existing fixture wires is it currenty tied into?

  • sparktgo
    sparktgo May 11, 2010

    how are the wires connected at the light? The earth only goes to one place. If there are two wires together at present at one side of the light and one on the other then keep it this way when swapping over your light

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Please remember to turn the power off when you are doing this. the extra cable is probably a looped or joined cable. put it in a connector or solder it with tape and leave it behind the light fitting or in the terminal block. connect the same cables up in the active, neutral and earth. like for like. make certain the power is off when you do this.

Posted on Nov 14, 2009

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