Why Are 2 Pin Plugs Used?

(ˈtuːˌpɪn plʌɡ) a plug that has two pins for inserting into a socket.

Which is better 2 pin plug or 3 pin plug?

When connected with an electric circuit, the current flows from the live to the neutral prongs. … Thus, 3-pin plugs ensure our safety from the current, as compared to a 2-pin plug. 3-pin plugs also limit the amount of power that can flow through the circuit, as compared to a 2-pin plug.

What is difference between 3pin and 2 pin plug?

The main difference between a two-prong outlet and a three-prong outlet is that a three-prong outlet has a ground wire, while a two-prong outlet doesn’t. … Your hot wire delivers electricity to the outlet while the neutral wire sends the electricity back to the main electrical panel.

Why do some appliances use a three pin plug while others use a two pin plug?

Why do we use three prong plugs? A three prong plug is designed so that electricity can be safely supplied to electrical appliances. The third prong grounds the electricity to protect anyone who uses the metal-encased appliance from electric shock.

Why do European plugs have no earth?

The earth connection is made by an earth pin which protrudes from the socket, and engages with a hole in the plug (there are no side earth strips). The protruding earth pin means that the plug can only be inserted one way around, just like UK plugs.

Which is safer to use the 2 prong or the 3 prong plug Why?

Two-prong outlets have only two wires: a hot wire and a neutral wire. But a three-prong outlet also has a ground wire, which is a safe place for unexpected bursts of current to go when they occur. … Shock and electrocution are more likely to occur when no ground wire is present.

Why is earthing necessary?

Earthing is an important component of electrical systems because of the following reasons: It keeps people safe by preventing electric shocks. It prevents damage to electrical appliances and devices by preventing excessive current from running through the circuit.

Why three pin plug is safer?

In a 3-pin plug, the wire that is connected to the ground pin of a plug is also connected to the metal body of the equipment. If any current leakage is appearing on the metal body of the equipment then, it must be discharged safely to ground. It will prevent the users from any electric shock while using the equipment.

How do I change a 2 wire plug to a 3 wire?

How to Replace Two-Prong Outlets to Three:

  1. Step 1: Check for ground. …
  2. Step 2: Remove the old receptacle. …
  3. Step 3: Connect the new receptacle. …
  4. Step 4: Fasten the ground screw. …
  5. Step 5: Ground the receptacle. …
  6. Step 6: Turn on the power.

What is the difference between 2 pole and 3 pole?

A double pole breaker has four terminals and is twice the width of a single pole breaker. Factories, workshops and commercial facilities, often have a 3-phase electrical supply. Three pole circuit breakers deliver 480VAC through three hot wires. … It’s effectively three single pole breakers bound together.

Why do UK plugs have earth?

The U.K. plug is designed so that the grounding prong is slightly longer than the prongs responsible for transferring current. Like a tumbler in a lock, this grounding prong is responsible for “unlocking” the socket, giving access to the more dangerous live and neutral terminals.

Why are plug sockets different around the world?

Engineers developed the idea of a ground pin to make plugs safer in the 1920s. Many countries adopted these grounded plugs immediately, but they didn’t always make them the rule. … So because different countries adopted innovations like these at different times, the plugs that they used changed throughout the years.

Is 1293 a standard?

This Standard was revised in 2019 and published as IS 1293: 2019. At present both 2005 and 2019 versions of IS 1293 are valid. … In December 2019, DPIIT notified Plugs and Socket-outlets as per IS 1293 for mandatory certification by BIS. This Quality Control Order is in effect from 01.

What is the difference between standard and universal plugs?

The electrical connections throughout the world are just too different and are not compatible with each other to have a single socket to accommodate each one. … A universal socket is, to put it simply, not safe and no electrical national or international standard approves it.

Which type of earthing is best?

Plate earthing is the best earthing.

What happens if earthing is not given?


If the house is not earthed, people could get electrocuted. Without an earth connection, the safety switches will not work and an electrical fault could cause a house or appliances to become ‘live’ as the current flows to earth. … there is poor or no connection between the electrical wire and the earth stake.

What are the disadvantages of earthing?

Disadvantages of the TT Earthing System

  • Each customer needs to install and maintain its own ground electrode. …
  • High over voltages may occur between all live parts and between live parts and PE conductor.
  • Possible overvoltage stress on equipment insulation of the installation.

Can you change a 2-prong outlet to a 3 prong?

It’s also possible to replace your two prong receptacles with three prong ones and add a GFCI circuit breaker at the service panel. Doing this will likewise protect you from electrocution. If you do this, you will have to label outlets with “GFCI Protected, No Equipment Ground.”

Do 2-prong surge protectors work?

The fact remains that two prong outlets have no ground and therefore don’t benefit from surge protectors. Simply swapping out two prong outlets for three prong versions isn’t enough, either. In fact, this creates an electrocution and appliance hazard.

Are 2-prong outlets up to code?

It’s good to know the types of outlets that are in your home, as you may find a two prong outlets are not up to code. As the name suggests, the two-prong outlet is one in which each socket only has two openings (prongs).

What country has the safest plugs?

The fuse and sturdy construction prove the British plug is very clearly the safest in the world. But it’s better than that, because the sockets also feature shutters that prevent children from inserting paperclips and getting a nasty shock.

Can I put a 2 pin plug in a 3 pin socket?

A 2 pin to 3 pin adapter works by allowing a 110-volt item (with the 2-pin plug) to be plugged into the 240-volt outlet (the 3-pin plug socket). Inside the 2 pin to 3 pin adapter, the current flows at the required level. Some appliances have voltage changers inside them that allow them to use the available current.

Do American sockets have an earth?

The two pin job is used if the appliance doesn’t need a ground. In North America, a plug on the end of the cord must have three pins, regardless of insulation type.