Reduction factors, applied to the current-carrying capacity of a cable with three loaded conductors, give the current-carrying capacity of a cable with four loaded conductors, where the current in the fourth conductor is due to harmonics.

A three core cable will be required from the beams to the control box.

Sometime a red wire if two circuits are being fed with a three conductor cable.

On this basis, for a single-phase 220V network, we must use a three-core wire.

That is, if you use a four-core wire, in which one core has zero, then you make the choice of section as for a three-core wire.

For installers: easy connection with only one cable with three wires; EN Tested technology for easy system certification in accordance with European standards.

For installers: easy connection with only one cable with three wires (24 V version); EN Tested technology for easy system certification in accordance with European standards.

For installers: easy connection with only one cable with three wires; EN Tested technology for easy system certification in accordance with European standards.

For installers: easy connection with only one cable with three wires (24 V version); EN Tested technology for easy system certification in accordance with European standards.

For installers: easy connection with only one cable with three wires (24 V version); EN Tested technology for easy system certification in accordance with European standards.