In this article I will tell you how to wire a plug but first of all you need to know what is plug/power plug.

The power plug is connected to a matching socket. Power plugs are mostly or completely male and sockets are mostly or completely female. A power plug has a protruding prong or pin that fits into a matching slot or hole in the socket.

Parts Of The Power Plug

How to wire a plug ?

Inside The Plug

Screw terminals are provided inside the plug for connecting the wires of the power cord (flexible). The plug has 3 pins (live, neutral and ground) as shown below. The socket terminals are clearly marked with the letters “L”, “N” and “E”.

Live Neutral

These 2 pins power the device


Under normal conditions, no current will flow through this pin. However, if the device fails, causing the metal case to work, this pin acts as a “bypass” to shunt current from the user. The RCD and/or MCB tripped in the electrical panel, de-energizing. The fuse in the plug may also blow (but it may trip before the RCD trips). When inserted, the ground pin also slides to open the safety shutter covering the live and neutral inlet holes of the socket.

When wiring the plugs, the wires of each conductor must be screwed tightly. This prevents electric arcs, overheating and potential fires.

The live, neutral, and ground terminals of the plug are marked L, N, and E respectively.

The live, neutral, and ground terminals of the plug are marked L, N, and E respectively.


The BS1363 plug is equipped with a ceramic, high breaking capacity (HBC) fuse as standard. This will avoid overloading the power cord and connected appliances due to a breakdown. Plugs usually come standard with a 13A fuse. This is the maximum current the plug can supply, and if the device tries to draw beyond this current, the fuse will blow. If the current rating is exceeded, the fuse will not blow

immediately. Instead, a large overload (eg due to a short circuit) will blow the fuse in a fraction of a second, while a small overcurrent may take several minutes to blow the fuse.

13A corresponds to a load of almost 3 kW at the EU standard voltage and frequency of 230 volts, 50 Hz (Hz).

Strain Relief

There are also strain relief clips or cable clamps that need to be screwed into the outer sheath or insulation of the cable instead of the inner core. Strain relief prevents wires from coming out of screw terminals during normal use.

How To Wire A Plug ? / How To Connect The UK Plug ?

Steps 1 to 9

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Necessary Tools

You will need:

  • flat screwdriver. The phase tester is ideal and a useful tool in your home toolbox. There is an internal neon light bulb that can be used to detect the presence of high voltage in a socket or light outlet.
  • Wire sniff (side cutter). maybe you can use scissors
  • sharp knife

Step 1: Remove the outer cover of the power cord

You will need to remove about 5 cm or 2 inches of sheath or external insulation from the power cord. It is very important not to damage the insulation of the inner core. If you hear a stuffy nose, you can cut along the sheath. Again, you have to be careful not to cut it.

  • The power cord must be stripped
  • One way to remove the sheath is to shear along the cable.
  • score the outer covering with a blade, being careful not to cut all the way to the end.
  • Bending the flex will break or weaken the insulation.
  • pull the sheath

Step 2: Shorten the live (brown) wire

However, if for some reason you need to cut a live wire, there are ways to do so with minimal risk. Wear insulated gloves and insulated shoes. Shoes must have rubber soles. Check for any conductive material near or near the wire to be cut.

Step 3: Remove the insulation from the inner core

Remove insulation from each conductor or core of the flex. About 10mm or less than 1/2 inch is sufficient. You can use a knife or use a engraving. Snips are perfectly fine with wire strippers. With a little practice, you just need to grab the conductor and cut and pull the insulator a bit. First try this in scrap flex. It is important to avoid breaking the strands of the copper conductor when stripping the insulation in any way. Use a knife, wire stripper, or snip to strip about 12 mm of insulation. exposed conductor.

Step 4: Twist the strands to double

Twist each core strand of the flex to double it. This will keep them together as you tighten the terminal screws and prevent them from spreading. Doubling the ends allows more wire to be screwed into the screw. This is especially important if the flex is a light gauge, in which case the conductor can be pushed outward when the screw is tightened and only the edge can be gripped. twisted strand . double the end of the wire

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Step 5: Unscrew the strain relief (cable grip)

The strain relief of the plug is fixed with two screws

Step 6: Feed the Brown Wire to the L (Live) Terminal

Feed the flex under the strain relief and slide the brown wire strands into the terminals. It’s easier if you remove the fuses and terminals from the plug.

Step 7: Connect the green/yellow ground wire to the E (Earth) terminal

Some devices do not have a ground wire on the flex.


Fully feed the wire into the screw terminal and tighten it securely.

Loose wires can cause arcing, overheating and fire!

Make sure the wires get caught in the screws

Tighten screws to avoid arcing, overheating and extreme fire.

Step 8: Finally, connect the blue wire to the N (neutral) terminal

Fully Wired Plugs – Pack all wires neatly so they don’t get caught in the cover or cover fixing screws.

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Step 9: Tighten the cable tie and put the cover back on

To secure the Flex, two strain relief screws must be tightened.

Check the fuse in the plug

How to wire a plug ?

You can use a multimeter to check if the fuse on the plug is OK. If you’re actually doing basic DIY, I’d recommend using one of these tools for your home toolkit. Check out my guide on using your multimeter here. How to use a digital multimeter to measure current, voltage and resistance

The Safest Plug In The World?

As you can check in google BS1363 plug is undoubtedly the safest plug in the world, with the following characteristics:

  • Fusion: The function of the fuse is to protect the power cord/flex from overheating and causing a fire. In a short circuit situation, the power distribution circuit supplies more current than the power cord/flex can carry (tens of thousands of amps). It can also blow a fuse on the plug to protect the cord and also protect wiring/components within the appliance. More overloads will blow a fuse (e.g. trying to power too many appliances from an expansion reel or multi-gang socket strip)
  • Insulated Pins: Prevents accidental contact with live pins when inserting and removing the connector.
  • Shutter Outlet on Socket : Prevent children from inserting pins, nails, or other metal objects into the socket.
  • Polarization: invert live and neutral as the plug cannot be inserted upside down
  • Long Ground Pin: Ensures that the device is grounded when the plug is inserted before the two power pins make contact
  • Grip: on the edge of the plug for easy removal
  • Flex: Pulls out of the bottom of the plug and pulls the flex to prevent removal.
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3-pin BS1363 plug used in UK and Ireland

What You Need to Know About Polarized Plug Wiring

polarized plug wiring

If you’re a new home mechanic or simply rewiring your current electrical outlet, you might be wondering if you should use a polarized plug. You can learn more about polarized plug wiring by reading the article below. This article will help you with the termination process and orientation of the NEMA 1-15 plug. It will also help you understand what polarized plugs are and how they differ from their non-polarized counterparts.


When you plug something into a wall outlet, you have to make sure that the polarized outlet is paired with a corresponding receptacle. In the same way, you must terminate the white wire at the receptacle to prevent electrical problems. If you find that the black and white wires are not connected, you need to locate these connections and reconnect them. If the polarity is not correct, you need to conduct further inspections of the electrical system.


Polarized plugs and outlets are not universal. Each one of them has a different design that allows only one orientation of plugs to be inserted. It is vital to know which orientation is best for your appliance in order to avoid any electrical shock. This article discusses the differences between standard and polarized plugs. Read on to learn more. This article also covers the advantages of polarized plugs and outlets.

Wire stripper

You need to purchase a wire stripper for polarized plugs if you’re working on a plugged-in electrical appliance. It’s essential to remember that these devices use polarized plugs with narrower hot and wider neutral prongs. It’s also important to ensure that the plug is disconnected from the electricity supply. To avoid causing a shock, disconnect the device from the power source before working on it.

NEMA 1-15

Polarized plug wiring has two distinct benefits over non-polarized wiring. In general, polarized plugs fit into polarized sockets. These sockets are more likely to fit polarized plugs, but non-polarized plugs cannot be used in a corresponding sized socket. The reason behind this is that the internal circuitry of the equipment requires the use of polarized plug wiring. If you’re not sure which type of plug to use, read on.

Electrical safety

A polarized plug is a type of electrical cord, heavy-duty extension cord, or both. The blades of a polarized plug are wider on one side than the other, and you can only insert it into a polarized outlet. This plug helps to avoid electrical shocks and fires by ensuring that electricity cannot flow from one outlet to the other. However, polarized plugs can cause electrical short circuits if they are improperly inserted.


You may have noticed that electrical appliances with polarized plugs have two prongs instead of three. Typically, the hot and neutral wires are different colors, and the plugs have gold or silver insulators. The polarized plugs complete the electrical circuit from the home panel to the electronic device. Unlike traditional plugs, these devices do not require grounding. In addition, polarized plugs are inexpensive and easy to wire.

Removing polarized plugs

To begin removing polarized plugs, unscrew the socket’s insert. The plug is made of three prongs: one that fits into the socket and a grounding prong that fits into the outlet’s grounding screw. Remove the socket’s insert by unscrewing the two screws. You will be able to remove the polarized plug. Afterward, you can remove the plug and then replace it with a new one.

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