## Sunday, July 30, 2023

THREE-PHASE TABLEROOM 380 V ac WITH SINGLE-PHASE DERIVACIÓN DE 220 V ac

To make the connections for this board, it is necessary to use a 40 A tetra polar thermomagnetic switch, in this way, the phases or lines and the neutral cable are connected at the top. These cables come from the meter, the voltages are, between phase and phase there is 380 V ac and between phase and neutral there is 220 V ac. From this point onwards, the necessary independent circuits and distributions are carried out. For this example I am going to use a 40 A tetra polar differential switch and a 32 A tetra polar thermomagnetic switch.

The connections are shown, in the majority of differential switches, it indicates to which side the terminal must be connected to the neutral cable. From the outlet of this switch connects to the thermomagnetic switch. Give it this way and we have the circuit with three-phase output, but the neutral cable. It is possible that we need a single-phase 220 V circuit, that is why it is necessary to use a 40 A bipolar differential switch, as well as small automatic switches for different independent circuits that we need.

The connections are made from one of the phases or lines and the neutral to obtain 220 V which is the single-phase voltage. Remember that not all countries use the same voltage or voltage level, this table is only for 380 V between phases and 220 V between phase and neutral. Let's see what function each element performs.

EL general switch: It is a thermomagnetic switch responsible for protecting the electrical conductors that are connected to the switches of each independent circuit against overloads or short circuits. The cut-off current value must be greater than the switches of each independent circuit.

The differential switch: It is responsible for protecting people against possible accidental contacts or against current leakage. In this example, the value of 40 A indicates that this current is the maximum amperage that can withstand and the value of 30mA is the difference in allowed current that it supports before jumping and deactivating the entire electrical installation. The current value supported must be equal to the largest of the main switch.

The small automatic switches: they are thermomagnetic switches, whose function is to protect the cables conductors of their respective independent circuit against overloads or short circuits. The current value of each switch, must not be greater than the general switch.

This switch differs from the others because it has a button or test button, which deactivates the circuit when it is pressed. As we see in this example we have two differential switches. One for the three-phase output and the other for the single-phase output.

The electrical conductors that serve to interconnect the switches on the table, must be at least 8 gauge. single phase. Important note: The electrical conductors must withstand more current or amperage than their respective automatic switch.

For example: The automatic switch with three-phase output supports 32 A and the conductors with a section of 6.0 mm2 support an average of 37 A, in this way each automatic protects the conductors that are connected to it. Remember that these gauge values for electrical conductors are the minimum, since there is no problem which sean of the largest cross section or the one with the smallest gauge number.

All the ground conductor cables that are used, must be taken to the same point, whether to a copper terminal bar or some metallic point and then to the physical ground door. Let's see what possible uses can be given to these outlets.

A three-phase motor can be connected to the three-phase output of 380 V ac, this four-pole switch can also be replaced by a three-pole switch since in most cases only three phases are used, minus the neutral.

On the 220 V ac single-phase outputs You can use a small single-phase machine on the 25 A switch output.

On the outlet of the mains outlets for general use, you can use them to connect a television or charge our cell phone, all equipment or electrical equipment that connects to this outlet must be of low power consumption.

THREE-PHASE TABLEROOM 380 V ac WITH SINGLE-PHASE DERIVACIÓN DE 220 V ac

To make the connections for this board, it is necessary to use a 40 A tetra polar thermomagnetic switch, in this way, the phases or lines and the neutral cable are connected at the top. These cables come from the meter, the voltages are, between phase and phase there is 380 V ac and between phase and neutral there is 220 V ac. From this point onwards, the necessary independent circuits and distributions are carried out. For this example I am going to use a 40 A tetra polar differential switch and a 32 A tetra polar thermomagnetic switch.

The connections are shown, in the majority of differential switches, it indicates to which side the terminal must be connected to the neutral cable. From the outlet of this switch connects to the thermomagnetic switch. Give it this way and we have the circuit with three-phase output, but the neutral cable. It is possible that we need a single-phase 220 V circuit, that is why it is necessary to use a 40 A bipolar differential switch, as well as small automatic switches for different independent circuits that we need.

The connections are made from one of the phases or lines and the neutral to obtain 220 V which is the single-phase voltage. Remember that not all countries use the same voltage or voltage level, this table is only for 380 V between phases and 220 V between phase and neutral. Let's see what function each element performs.

EL general switch: It is a thermomagnetic switch responsible for protecting the electrical conductors that are connected to the switches of each independent circuit against overloads or short circuits. The cut-off current value must be greater than the switches of each independent circuit.

The differential switch: It is responsible for protecting people against possible accidental contacts or against current leakage. In this example, the value of 40 A indicates that this current is the maximum amperage that can withstand and the value of 30mA is the difference in allowed current that it supports before jumping and deactivating the entire electrical installation. The current value supported must be equal to the largest of the main switch.

The small automatic switches: they are thermomagnetic switches, whose function is to protect the cables conductors of their respective independent circuit against overloads or short circuits. The current value of each switch, must not be greater than the general switch.

This switch differs from the others because it has a button or test button, which deactivates the circuit when it is pressed. As we see in this example we have two differential switches. One for the three-phase output and the other for the single-phase output.

The electrical conductors that serve to interconnect the switches on the table, must be at least 8 gauge. single phase. Important note: The electrical conductors must withstand more current or amperage than their respective automatic switch.

For example: The automatic switch with three-phase output supports 32 A and the conductors with a section of 6.0 mm2 support an average of 37 A, in this way each automatic protects the conductors that are connected to it. Remember that these gauge values for electrical conductors are the minimum, since there is no problem which sean of the largest cross section or the one with the smallest gauge number.

All the ground conductor cables that are used, must be taken to the same point, whether to a copper terminal bar or some metallic point and then to the physical ground door. Let's see what possible uses can be given to these outlets.

A three-phase motor can be connected to the three-phase output of 380 V ac, this four-pole switch can also be replaced by a three-pole switch since in most cases only three phases are used, minus the neutral.

On the 220 V ac single-phase outputs You can use a small single-phase machine on the 25 A switch output.

On the outlet of the mains outlets for general use, you can use them to connect a television or charge our cell phone, all equipment or electrical equipment that connects to this outlet must be of low power consumption.