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Last updated: July 31, 2025

3 Pin Socket Connection Diagram with Live Neutral Earth

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Components List

Single Phase Gang Socket

8-pin Socket Gang

Electrical socket board with 8 outlets (pins) for multiple devices

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3 pin socket connection diagram

Learn how to connect a 3-pin socket properly using live, neutral, and earth wires. Ideal for household or office electrical installations.

how to wire 3 pin socket

The 3-pin socket connection diagram shows how to safely wire Live, Neutral, and Earth wires to a socket outlet. It ensures safe operation of appliances by providing a return path and grounding. Proper connection prevents electric shocks and short circuits.

Formula & Table Summary:

Basic Wiring Concept:

Live → Right Pin | Neutral → Left Pin | Earth → Top Pin
Pin NameWire Color (Standard)Function
Live (L)Red / BrownCarries current to the appliance
Neutral (N)Black / BlueReturns current from appliance
Earth (E)Green / YellowSafety path for fault current

3 pin socket wiring diagram

A 3-pin socket is commonly used to power electrical appliances that require grounding for safety. It has three terminals: Live (L), Neutral (N), and Earth (E). The live wire carries current to the appliance, the neutral wire completes the circuit, and the earth wire provides a path to ground in case of leakage. The earth pin is slightly longer and thicker, ensuring it's the first to connect for safety. This socket is standard in most household and office outlets for devices like refrigerators, computers, and ovens.

Socket wiring tutorial

AppliancePower RatingUses Earth?
Refrigerator200WYes
Laptop Charger65WNo
Microwave Oven1000WYes

Frequently Asked Questions - 3 pin socket connection diagram:

What is a 3 pin socket used for?

A 3 pin socket is used to safely power electrical appliances using live, neutral, and earth connections.

Which wire goes where in a 3 pin socket?

Live to right terminal, Neutral to left, Earth to top or center.

Why is the earth pin important?

It protects from electric shock by grounding fault current.

Can I use a 3 pin socket without earth?

It’s unsafe and not recommended; earth ensures safety.

What is the voltage rating for 3 pin sockets?

Usually rated for 220–240V in most countries.

Is there a standard wire color code?

Yes, typically Brown (Live), Blue (Neutral), Green/Yellow (Earth).

Can I connect multiple sockets in series?

It’s safer to connect in parallel to maintain voltage.

How do I test a 3 pin socket?

Use a multimeter or socket tester to verify voltage and polarity.

Do all countries use the same 3 pin plug?

No, plug type and voltage may vary by country.

Can I install a socket myself?

Only if you’re qualified. Otherwise, hire a licensed electrician.

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Md. Jony Islam is a highly skilled professional with expertise in electronics, electrical, mechanical, and civil engineering, as well as finance. Specializing intransformer service and maintenance for 33/11kV substations, he ensures reliable and efficient electrical systems. His mechanical engineering skills drive innovative designs, while his financial acumen supports effective project budgeting. With a strong foundation in civil engineering, he contributes to robust infrastructure development. Md. Jony Islam's multidisciplinary approach ensures efficiency, quality, and reliability across all projects.