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What is the blue wire for:; Is it positive or negative please what is the brown wire for: Is it positive or negative and is the yellow and green the earth wire

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Blue = Neutral, Brown = Live and you are correct Yellow & Green = Earth
The live wire (brown) must be connected to the fuse if there is one.
You could say that the blue wire is negative (or zero) and the brown wire is positive as this is the one the high current passes through. The blue wire completes the circuit, which is needed for current to flow.
Hope this helps!

Posted on Oct 13, 2010

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