Split AC Wiring Diagram:

This diagram shows how to make Split AC Wiring Diagram. In this circuit, we use a single-phase split indoor-outdoor AC, an isolator switch, a DP MCB ( Double Pole Miniature Circuit Breaker ), a DPST switch, and a junction box. First, we need to input power to DP MCB, then input power to all components in this circuit like our diagram exactly. Now this circuit is ready for use. If you want to know more about this circuit please check our youtube video below the post.


Diagram of Split AC Wiring:

Split AC Wiring Diagram

Components needed For this Project:

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

  1. DP MCB 20A [See Buy Click Amazon]
  2. DP 20A Switch [See Buy Click Amazon]
  3. Air Conditioner [See Buy Click Amazon]
  4. Junction Box [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 Split AC Wiring:

01. DP MCB:

DP MCB In 2 Pole MCB, switching & protection is affected in phases and the neutral. A Double Pole or DP Switch is a Switch that Controls 2 Circuits at the same time. In terms of Residential Switching, this Normally means it Switches the live and Neutral at the same time. In Layperson Terms, Double Pole switches or DP Switches are Exclusively Designed to Control 2 Different Electrical Circuits at the same time, which allows the Appliances to Isolate safely and reliably. Fan or light Combinations and Medical Equipment are some of the many applications for DP Electrical Switches and Electrical components.

02. Switch:

20 amp Double Pole Switches are generally used with Electrical appliances that need to be hard-wired as opposed to using a Plug and power Socket. Double pole switches make it possible to isolate appliances safely from the power supply source. double pole switches or DP switches are exclusively designed to control 2 different electrical circuits at the same time.

03. Indoor/Outdoor AC:

The Indoor Unit is What you Will typically Find Mounted on a Wall set. The Outdoor Unit is Mounted Either on an Exterior wall or Placed at the GND Level. The Outdoor Unit Will typically be in a Slab of Concrete. This Unit is Where the Heat is Expelled From the House used. After the Indoor Unit Pulls The Heat and Moisture From The Air Inside your Home. It transfers The Heat via The Refrigerant to the outdoor unit side. Cooler Temperatures, and lower humidity. With all Air Conditioning Components Located Outside, you Can keep cool With a Virtually Invisible, Silent System.

04. Junction Box:

A junction box is an Electrical Enclosure that Houses one or More Wiring Connections. The box Protects the Connections, Environmental Conditions, From Which Usually Contain Vulnerable Points Such as Wire Splices, and Accidental Contact. A Junction box is an Enclosure That Protects a Connection Of 2 or More Wires Carrying Electrical Current. The use of Junctions Removes the Need to Run a Wire From Every outlet or Switch Back to the Main Service Panel. This Level of Protection is Needed to Prevent fires and reliable connections.

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Frequently asked questions

How is an AC circuit wired?

The cable consists of 3 wires-live wire (red or brown), a neutral wire (black or light blue), and an earth wire (green and yellow). The live wire (L) is at a high voltage (220 V for the domestic supply) and brings in the current flow.

Why does AC use 3 wires?

It used to be that way in the U.S. just a hot or a neutral wire, and a 2-bladed outlet. Then people were getting injured, shocked, and in some cases electrocuted because of faulty items or faulty wiring. So safety was added, a ground that its only purpose in life is safety.

How many wires are used in AC?

For an AC unit that provides just cooling there should normally be three or four wires. Small wires usually run in a bundle size of 18 to 22 gauge. The bundle size could be 2 to 10 wires depending on what the contractor has/uses.

What is a common wire in AC?

But sometimes, you may need to connect a common wire (C wire) or power supply accessory, like the Nest Power Supply Connector, to make your system compatible. Unlike other wires connected to your thermostat, a C wire does not control heating or cooling functions. It only provides constant power supplyto your thermostat.

What are the 2 types of electrical wiring diagrams?

They are wiring, schematic, and pictorial diagrams. The 2 most commonly used are the wiring diagram and the schematic diagram.

Read more Single Phase Wiring


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