Extension piece with your own hands. How to make an extender?
Extensions are often used in offices, as well as in homes and apartments. The stores now have a huge assortment of a wide variety of extension cables from a variety of manufacturers.
Sometimes it happens that it is difficult to choose an extension cord of the required length, which is designed for a certain power.
In addition, there is always the risk of stumbling upon low-quality products. The most optimal solution is to make an extension cord with your own hands.
Initially, it is necessary to clearly define how and for what the extender will be used, the devices with what power will be included in it, and also in advance to lay the power reserve for the future. Perhaps in the future it will be necessary to include devices with a high power, and it is in this case that the previously stored stock will help you to protect yourself from possible troubles and you will not need to buy a new extension cord.
There are articles in which it is described in detail because of what the extender can burn out, what will happen if to submit through it a powerful load that it can not sustain.
How to make an extension cord with your own hands?
The extender consists of three main components:
- a block of outlets;
- electrical plug;
- cable (most often using a PVC cable).
The plug and socket block are usually made for a maximum current of 16A (3.5kW) or 10A (2.2kW). In accordance with this, if you plan to connect devices whose power does not exceed 2kW, then you will have enough socket block and 10A plug, at the same time the wire cross section should not be less than 1 mm2.
If the power of the connected devices exceeds 2 kW, then it is necessary to choose a socket block and a 16A plug with the wire cross section not to be less than 1.5 mm2.
In this example, an extension cable will be made, into which devices with a power of no more than 2 kW will be connected, therefore a wire PVS-2x1.0, as well as a socket block and a 10A plug will be used.
In most of the apartments, two-wire wiring is still used, so the manufacture of a two-wire extension cord that does not have a ground connection will be considered.
It is necessary to disassemble the block of sockets, having unscrewed four self-tapping screws. Inside you will find a contact group and two screw terminals, to which wires will be connected.
You also need to disassemble the plug by unscrewing one screwdriver.
Now you need to cut off the necessary length of the wire, and then remove the required length of insulation from both ends of the wire.
It is very convenient to use a multiwire wire, as it is flexible and soft, but during its connection to screw terminals, its wires can be transmitted, which can break contact, as well as heat and sparking. Therefore, it is necessary to wire or propajivat, or use pressure test tips NSHVI.
You can test the wires of the socket block with the tips, if you have a press pliers.
Now you need to bring the tip into the screw clamp and fix it there securely with the screw.
It is necessary to put the top cover of the plug on the wire, clean the wires and screw them with a ring under the screw, which will clamp them.
If you do not have a press clamp, then you need to clean the stripped wires with solder, both on the side of the socket block and on the side of the plug.
In the socket block, the wires must be wound into the clamp and tightened carefully with screws. The wire itself needs to be attached to the housing of the socket block using a clamping bar and two screws so that the wires do not pull out of the screw terminals during operation. Similarly, you need to fix the wires on the plug using screws and washers. After this, you can assemble the power outlet and plug.
Now it remains only to check with a multimeter the correctness of the assembly. To do this, switch the multimeter switch to buzzer or resistance measurement. One probe must be placed in one socket of the socket block, and the second probe touching any plug contact. If the parting is connected to one wire, the buzzer will sound or the multimeter will show zero resistance, and if to different wires, then the buzzer should not beep, and the multimeter will show a break. Then you need to move the probe into the socket block and continue checking. When everything is checked, the extension cord can be used.