How to connect Bathroom extractor fan

[dontbelieveawordofit]

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[terryplumb]

in what scenario would there be red and blue? that implies he has a bodge of old and new wiring.
it should either be black and red
or
brown and blue.

No it doesn't. Take a look at three core and earth cable colours prior to harmonisation.

 

[dontbelieveawordofit]

No it doesn't. Take a look at three core and earth cable colours prior to harmonisation.

.

 

[terryplumb]

What part of harmonisation don't you understand ?

 

[dontbelieveawordofit]

.

 

[Glen dyson]

If i test the yellow wire to see if its live when switched on and dead when its switched off that should confirm that it is the switched live ? Am I correct by saying that

 

[terryplumb]

in what scenario would there be red and blue? that implies he has a bodge of old and new wiring.
it should either be black and red
or
brown and blue.

This shows a clear lack of understanding .

 

[Glen dyson]

Terry If i test the yellow wire to see if its live when switched on and dead when its switched off that should confirm that it is the switched live ? Am I correct by saying that

 

[terryplumb]

What testing equipment will you use?

 

[Glen dyson]

Just a basic tester to see if wires are live

 

[terryplumb]

Not one of those screwdrivers is it ? If so bin it , they are not reliable .You need a multimeter or a twin probe voltage tester ,minimally ,to do safe testing on live circuitry.

 

[Glen dyson]

Its this one

 

[terryplumb]

They are not much better to be frank.

 

[Glen dyson]

Ok terry you have a lot more knowledge about this than me , wouldnt that give me an accurate reading for the yellow wire to see if its live when it’s switched on and dead when its switched off or is that just me being nieve?

 

[jj4091]

It won't give you an accurate reading but it should tell you if there is a voltage on it when you switch on. Keep the wire you are checking as far away as you can from the other wires & as near to the end of the wire as possible. If the fan still does not work when you reconnect then you will need a multimeter to check across lives & neutral.