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Back to Basics: How to wire a household electrical plug

Categories: Electrical Contractors , Northampton Electrician

NOTE: The UK mains electricity supply is about 230V and can kill if not used safely. 

How to wire a plug

Here in the UK, we have a three-pin mains electricity plug that power everything in your house, how to wire one, well that is something I’m going to go through.

Typically a UK mains plug will have a blue, brown and green & yellow striped wires.

Blue wire is neutral

Brown wire is live

Green & Yellow wire is Earth

Red wire is Live

Black wire is Neutral

Green & Yellow wire is Earth

wires from a uk electrical plug

Wire that plug

un-do a uk mains plug

1, Unscrew the plug cover with a Phillips screwdriver or flat tip screwdriver making sure you don’t lose the screw!

time to wire that plug

2, Now carefully strip enough insulation to expose about 4-6mm.

time to unscrew the pins on the plug

3, Unscrew the pins with a flat tip screwdriver

green and yellow wire
and the blue wire
and the last one, the brown wire LIVE

4, And one by one place each wire in the correct pin, in this order.

time to test

5, Time to test!

What does a 13AMP plug power?

Electric Kettle

Washing Machine

Electric Fire

Tumble Dryer




Anything up to 2990.00 Watts

What does a 3AMP plug power?

Table Lamp,


Computer PC

Games Console



Power Drill

Manufacturers have now standardised plug fuse ratings to be either 3A or 13A. However, 5 Amp fuses are still used in some older equipment and are available to buy.

If you encounter any difficulties please don’t hesitate to contact me by calling me on 07814 881 295

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