Tip 2: Using twist ties or terminal blocks.

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3. Indoors, it is advisable to use Wago self-clamping terminal blocks with paste that prevents oxidation of aluminum wires. This is a quick way to connect copper and aluminum wires that does not require additional insulation. Due to their small size, self-clamping, screw or spring terminal blocks are very convenient for connecting wires in junction boxes.

4. Finally, if you don't have a terminal block or "nut" at hand - there are different situations, it is much more reliable to tighten the copper and aluminum wires with a bolt and nut instead of the usual twisting, placing a washer between them, which will eliminate direct contact between copper and aluminum. Such a connection will be inferior in its contact reliability to the manufactured terminal blocks or "nuts", except perhaps in its bulkiness - it is more difficult to place it in a junction box. When using this method, it is also worth noting the need for good insulation of the connection.

When connecting conductors, it is iran mobile database to take into account many important factors: the material of the current-carrying cores of the switched wires, their electrochemical compatibility or incompatibility (e.g. copper and aluminum), the cross-section of the wires, the length of the twist, the network load, etc.

However, the regulatory documents governing the rules for performing electrical installation work, in particular the PUE (Rules for the Installation of Electrical Installations), clearly state the prohibition of connecting wires by twisting:

PUE: p2.1.21. Connection, branching and termination of wires and cables must be carried out using crimping, welding, soldering or clamps (screw, bolt, etc.) in accordance with current instructions.

As we can see, the Electrical Installation Code allows only 4 types of wire connections, and twisting is not among them (except for cases when the twisting is preliminary, for example, before soldering or welding). Therefore, endless disputes and discussions about the advantages and disadvantages of twisting lose all meaning, because no fire inspector will approve an electrical installation if its wires are connected using twists.