The term “Schuko plug* “Means nothing else than a protective contact plug. The “Schuko plug system” is used worldwide and is a system of sockets and plugs. The Schuko plug has two contact pins with a diameter of 4.8 mm, a length of 19 mm, and a distance of 19 mm from each other. The outer conductor (phase) and the neutral conductor (N) connect these two contact pins. In the following article, we get to know about How to wire a plug? So please don’t skip the article from anywhere and read it carefully because it will be instrumental for you guys.
How to wire a plug?
The third contact of the Schuko plug is the protective contact. The green-yellow protective conductor is connected here. He is responsible for the safety and should divert fault currents. If, for example, in a closed circuit, the wind is diverted via the protective conductor. When the Schuko plug is plugged into the socket, the safe protective contact is established by the springs on the socket and the soft contacts on the Schuko plug. This protective contact is the first on-site when plugging in, before the other two poles (L and N).
The connection of a Schuko plug
1. Remove the plug cover.
2. Unscrew the contact screws (until the opening for the connection wires is large enough).
3. Strip the connection cable (approx. 4 – 5 cm). Carefully cut into the jacket with a sharp knife (be careful not to cut too deeply and damage the veins). Now move the coat back and forth and pull it off.
4. To cut the wires correctly, hold the cable on the plug so that the jacket is just above the clamp of the strain relief.
5. Bend the wires at the corresponding poles and cut the wires to the correct length. However, it should be added about a centimeter before the wires are then cut with a wire cutter *be cut off. It is also essential that the green-yellow protective conductor is a little longer than the other two. Thus, if the strain relief fails due to constant use, the protective conductor is the least under tension and could still serve its purpose in the event of a fault.
6. Now strip the wires with a wire stripper (approx. 7 – 8 mm). Wire end ferrules *on the cables and secure with a pair of crimping pliers. Important!!! Never pinch the flexible wires without ferrules.
7. Insert the cable into the strain relief and let the jacket look about 2 mm over the fastening. Tighten the strain relief.
8. First, clamp the green-yellow wire into the terminal for the protective contact (middle terminal).
9. Clamp the other two wires, the neutral conductor (N color blue) and the outer conductor (L color black, brown, or gray), into the two-pin contacts on the left and right. It doesn’t matter which wire pinched on the left or the right, as the plug is not reverse polarity protected, and there are two ways to plug it in. It is only essential to have a protective conductor on the protective contact in the middle!
10. Now, check all the wires for a tight fit and arrange the cables neatly in the connector so that the fastening screw of the cover can cause no damage.
11. However, fasten the strain relief. Important! The strain relief must be clamped onto the cable jacket – not onto the wires!
12. Unscrew the cover. Check. Complete.
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