Single Phase Fridge Wiring | single-door refrigerator wiring

Single Phase Fridge Wiring | single-door refrigerator wiring

Single Phase Fridge Wiring:

This Diagram Shows Single-Phase Power is Usually Connected at 240 Volts and is Delivered to the Home or Office With two Wires, Active (phase) and Neutral. Single-Phase Power is Used for Everyday Equipment such as Lights, TVs, Radios, and Fridges. In a Single-Phase Connection, The Flow of Electricity is Through a Single Conductor. 

Diagram of Single Phase Fridge wiring:

Single Phase Fridge Wiring
Fig 1: Single Phase Fridge Wiring

Components Need for this Project:

You can get the components from any of the sites below:

  1. Overload Protection [See Buy Click Amazon]
  2. Thermostat [See Buy Click Amazon]
  3. Indoor Lamp [See Buy Click Amazon]
  4. Compressor [See Buy Click Amazon]
  5. PTC Starter Relay [See Buy Click Amazon]
  6. Door Switch [See Buy Click Amazon]
  7. 3 Pin Top Plug [See Buy Click Amazon]
*Please note: These are affiliate links. I may make a commission if you buy the components through these links. I would appreciate your support in this way!


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Components used to make the Single Phase Fridge Wiring:

01. Overload Protection

Overload Protection
Fig 2: Overload Protection
Overload relays are often used to protect the motor from excessive current flow. Overload relays are used to protect the motor from overheating. Besides some specific faults such as phase to phase, phase to ground, etc. overload relay provides protection to the motor. A thermal overload relay works on the principle of bimetallic strip electro-thermal characteristics. When the bimetallic heats up, the trip function in the overload relay turns on and disconnects the power supply to the contactor coil, thus tripping the overload relay and breaking the motor current and saving the motor.

02. Thermostat

Fig 3: Thermostat
Thermostat is the control device of fridge/refrigerator. which directly or indirectly controls one or more heat sources and cooling systems to maintain the refrigerator's required temperature. A thermostat is a discrete mechanical device that changes its state or electrical contact state when a certain temperature setpoint is reached. When the metal capsule is heated, the volume of its contents changes, which pressures the relay membrane through a capillary tube, and when the set temperature is reached, the contacts are closed or opened.

03. Indoor Lamp

Indoor Lamp
Fig 4: Indoor Lamp
CFLs work in a completely different way from ordinary lamps, they work by using a different process called fluorescence rather than generating light from heat. A typical light bulb wastes 90% of energy and converts only 10% of energy into light, this is where CFL has the biggest advantage. CFL- Curved or conical glass tube filled with argon and a small amount of mercury vapor. The inner wall of the glass is coated with fluorescent material. CFL- It is manufactured using the principle of creating fluorescent light. CFL- Originally white in color but now the construction and use of CFLs producing colored light has become popular.

04. Compressor

Fig 5: Compressor
The work of the compressor is to keep the cooling system of the fridge AC running. With the help of which the cooling system of fridge AC works. The refrigerator compresses the gas inside the AC to produce cold air. The main function of the compressor is to create or supply cold air inside the refrigerator AC. The main function of the compressor is to compress the gas (R22, R410A) inside the refrigerator AC or to compress the air through the rotor inside the motor. And as a result of this compression, the work of the compressor is to collect the low-pressure vapor refrigerant from the evaporator, turn it into high-pressure and reach the condenser to generate cold air inside the refrigerator.

05. PTC Starter Relay

PTC Starter Relay
Fig 6: PTC Starter Relay
This relay is known as 8 pin relay because it has 8 terminals. When coil power is supplied. A magnetic induction is created due to which the connected sheet of the Com part moves towards the NO part changing to NO-NC. The former NC region loses conductivity and becomes NO. Thus, as long as power is supplied to the coil, the NO and NC positions will remain in the alternating state, and when the power is removed from the coil, it will return to its original position. This is basically how a relay switch works.

06. Door Switch

Door Switch
Fig 7: Door Switch
A Single-Pole, Single-Throw (SPST) Switch. It's Got one Output and One Input. The Switch will Either be Closed or Completely Disconnected. SPSTs are Perfect for on-off Switching. They're also a Very Common Form of Momentary Switches. SPST Switches are Commonly Used in a Variety of Electrical Circuits and Applications, Such as Turning on And off Lights, Fans, and Other Appliances. They can Also be Used to Control the Flow of Electricity to Different Parts of a Circuit or to Switch Between Different Circuits Altogether.

07. 3-Pin Top Plug

3 Pin Top Plug
Fig 8: 3-Pin Top Plug
Many of us mistake a device that receives power through a 3-pin plug as a 3-phase load. Actually, they are single-phase loads and a 3-pin plug is used in these devices to avoid electrical accidents. This type of plug has three pins called 'Live', 'Neutral', and 'Earthing' which are marked by letters 'L', 'N', and 'E' respectively. The three wires to which these three pins are connected are also colored differently. The earth pin is connected to yellow or green, live pin to red or brown and neutral pin to black or blue wire. Among these pins, the earth pin is the longest and thickest.

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Frequently Asked Questions

Which two lines connect to a domestic refrigerator compressor?

The suction line connects the evaporator to the compressor, the discharge line connects the compressor to the condenser, or the liquid line connects the condenser to the expansion device.

Which gas is present in the refrigerator?

Modern refrigerators usually use the refrigerant called HFC-134a (1,1,1,2-Tetrafluoroethane), which does not deplete the ozone layer and, unlike Freon. R-134a is becoming much rarer in Europe, where newer refrigerants are being used instead.

Which compressor is mostly used in refrigerators?

You find reciprocating compressors in household refrigerators or freezers (welded hermetic compressors). In commercial refrigeration or air conditioning systems are semi-hermetic, and welded hermetic compressors.

Which liquid is used in the refrigerator?

Gas, and refrigerant, is a substance that absorbs heat and transfers it to another substance. It is used in a variety of appliances, including refrigerators. There are many different types of gases used in refrigeration systems today, but the most commonly used are R-134a or R-438A.

What is the role of CFC in refrigerators?

Their other important property is their volatility, having boiling points close to zero degrees of the Centigrade. These physical properties make them ideal for use as refrigerant gases in air conditioners, freezers, or refrigerators.

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