How to terminate a wire with a tip?

tips It's important to know

The first thing I'd like to talk about is the importance of winding wires and cables with a special tool and why you need to compress the conductors with the tips. Surely, you paid attention to how the earthing bar is connected to the body of the switchboard. The yellow-green wire is fixed on both sides with a screw connection through a special tip, as shown in the photo below.

Not so long ago, instead of such a tip, the vein simply curved with a ring using pliers and tightened with a screw. Some electricians were simply inserting a vein between the screw and the plate and carefully clamped with a screwdriver. To do so is strictly forbidden, becauseWith this method of termination of the veins, the transitional resistance increases, as a result of which it is possible to see the fused insulation of the cable, which can lead to a short circuit in the wiring or more serious consequences - the fire in the house.

Another very unfavorable consequence in the case of poorly secured conductors is the zero burn at high current loads. The consequences of burning off the zero wire can be found in the corresponding article!

Termination technology

Self-termination of the wire or cable with a special tool will not present difficulties. You just need to take a suitable tip, put it on the rest of the vein and squeeze the press. According to the GOST rules, the termination should be made no less than in two places, so that there is reliable contact and a minimum of transient resistance. In addition, it should be noted an important requirement - to crimp the aluminum conductor, you must additionally use quartz-vaseline lubricant, which prevents the formation of oxide film, which impairs contact.

At home, it is not always wise to buy an expensive crimping tool, so there are also alternative options. For example, there is a special tool for stripping insulation from wires and cables - a stripper, the design of which can include a press, as shown in the photo.

You can also do without so-called forceps - manually flatten the hammer with a hammer or pliers, but in this case, there is no guarantee of good contact, so it is better to at least squander at least a stripper for reliable termination of veins.

We draw your attention to the fact that if you have decided to terminate a solid conductor with ticks, it is necessary to select the correct crimping die. With improper selection, there is a high probability of eating a bite!

In addition, there are special tips for soldering. In this case, the termination of the conductors of the wire or power cable takes place in two stages:

1. The core, stripped to metallic luster and treated with neutral solder, is inserted into the tip as far as it will go.
2. Solder is poured out through a special hole.

press. Briefly about the tips of the

. Well, the last thing I would like to talk about is the use of which tips to terminate the wire and cable at home. To date, the following products for endings are popular in industry and everyday life:

• TM - copper, uncoated;
• TML - copper, electrolytic tin-plated;
• TML( о) - additionally there is a control window, which allows to visually determine whether the vein has completely entered the tip;
• TAM - aluminide, allow you to safely attach the aluminum conductor to the copper bus;
• TA - aluminum;
• PM - copper, for soldering;
• NSP - pin, used to connect circuit breakers and other protective automatics of the latest models with a crimped pin;
• NB - bolted, allow you to finish the veins of wires and cables mechanically( tightening the bolt).

Here we have listed the most popular types of tips that allow you to terminate the conductor to securely connect to buses and electrical appliances. It should be noted that the cross-section of the core for termination according to the PUE can be from 0.75 mm2 to 240 mm2.When selecting the tips, pay attention to their markings, which looks like this:

TM( for example) -XX-YY, where:

• XX - conductor cross section for crimping;
• YY is the diameter of the hole for the clamping bolt.

Also read:

• Decoding of the marking of wires and cables
• What tools should the electrician have?
• Assembling the switchboard with their own hands