Connecting the air conditioner to the mains has some features. It is best to entrust the work to professionals. But experienced home craftsmen with knowledge in the field of electricity will do the job.
How to connect the air conditioner to the mains
The best option for connecting the air conditioner to the mains is recharge from a dedicated machine. It is installed in the distribution panel, if there is no free one. The amperage of the machine is selected depending on the power of the climatic equipment and is calculated according to the following formula:
- the air conditioner's power is divided by voltage (220 volts), the resulting figure is increased by 30% as a reserve.
Before connecting the air conditioner to the mains, you need to select the wire cross section. This is done taking into account the current strength:
- at a current below 18 amperes, a cable cross-section of 1.5 kV is selected. millimeters;
- at a current strength of 18 to 25 amperes, a cross-section of 2.5 kV is selected. millimeters.
The scheme for connecting the air conditioner to the mains involves the use of copper, three-wire cables, as the air conditioners are necessarily grounded.
Air conditioner connection diagram to the mains
A phase cable (most often brown or red) is attached to the machine. The blue power wire connects to zero on the shield. The yellow and green cable is responsible for grounding, which connects to the grounding terminal.
Old houses are not equipped with earth shields.
Therefore, in the connection circuit of the air conditioner to the mains, it is necessary to insert a residual current device or RCD. This is an automatic machine combined with a differential switch. As soon as a small amount of current enters the ground wire, the automation cuts off the current supply.
Wiring for connecting the air conditioner
The power line is carried out the closest way from the shield to the air conditioner. Before connecting the air conditioner to the mains, it is important to consider the safety of others: the wire is laid in a groove hollowed out in the wall or covered with a protective box.
This prevents damage to people and access to bare wires. The cable is carefully attached with special clamps. The box also carries an aesthetic load, making the wiring less noticeable.
The wires of the corresponding colors come out of the air conditioner case, to which the cable is connected, taking into account the colors and using the terminal blocks.
