Although today the most the best way is the use of WAGO terminal blocks; many electricians, even experienced ones, use twisting in electrical work. Such a connection is insulated, of course, with a special tape, which comes in any color, but mostly black, red or blue. Next we will put it up for discussion and talk a little about which insulating tape is better for electrical wiring - PVC or CB?
Properties Overview
So, first, let's look at the properties of cotton insulating tape (CT). The main advantage of such insulating tape is that it does not melt when the wire heats up and can withstand mechanical loads and is not damaged at sub-zero temperatures. In addition, an important advantage of the product can be considered increased wear resistance - it is difficult to wipe off during operation. As for the disadvantages of CB electrical tape, the main one is the poor tightness of the material. It cannot be used in rooms with high humidity or outdoors. In addition, cotton fabric does not stretch and can withstand a breakdown voltage of no more than 1000 Volts.
As for the polyvinyl chloride analogue, the material has increased resistance to moisture, has good stretch and can withstand breakdown voltages of up to 5000 Volts (better than the analogue). The main disadvantage of PVC electrical tape is the fact that it is not heat-resistant, because... melts at high temperature. According to the technical characteristics of the product, the maximum operating temperature should not exceed +70 °C (GOST 16214-86). In addition, plastic insulation tape breaks in the cold and loses its stickiness.
We’ve sorted out the properties of rag and plastic insulating tape, now let’s discuss which one is better to use for home electrical wiring - rag or plastic.
Which option should you prefer?
Since cotton fabric tolerates high temperatures better, but is afraid of humidity, it is best used indoors: at home, apartments, etc. In the past, cotton insulation tape was used in junction boxes because poor wire connections will heat up over time, and this insulation will not melt and prevent .
PVC products are best used for electrical wiring outdoors and in rooms with high humidity. In addition, you can insulate the wires from the chandelier with plastic insulating tape, as well as in other places where there will be no strong heating of the wires.
In a car, for reasons of accuracy, rag insulating tape is often used, because... it is black and does not catch the eye when the hood is opened. To make this insulation airtight, heat shrink tubing is placed over the cotton fabric.
Well, experienced electricians, in order to “kill two birds with one stone,” first insulate the wires with black cotton tape, after which they additionally wrap several layers of PVC products. In this case, the wiring will be protected from short circuits, because the insulation will not melt, and from high humidity.
By the way, the most the best manufacturers companies such as ISOLOCK, TDM ELECTRIC and Klebebander are considered electrical tapes. In most cases, professionals leave only positive reviews about companies' products. You can also choose cheaper, but still high-quality insulating tape from IEK for wiring in the house! Additionally, we recommend watching a video that compares the quality of several manufacturers of insulating tapes.
Topic: general information about insulating tape, PVC and cotton tape.
This topic is some a brief overview such well-known things as electrical tape. There is hardly a person who has not seen this material and has not used it at least once in his life. But oddly enough, even when dealing with it every day at work (this is, of course, electricians in the first place), not many people know about its technical properties and characteristics. This will be discussed in the article.
Insulating tape(insulating tape) is a consumable material, the main purpose of which is primarily to provide hermetically sealed insulation of objects and parts from certain environmental factors, such as sunlight, moisture, weak salt solutions and solvents.
And from an electrical point of view, this is to ensure electrical insulation of bare conductors (wires, cables, tires, etc.) and conductive parts from accidental human touch or contact with each other (to prevent the possible possibility of an electrical short circuit).
As you know, the most common types of such insulating tape in everyday life are two types: PVC-based insulating tape and CBD insulating tape. Perhaps without even knowing it, every electrician prefers one of them (mostly PVC), but the second also has strengths. And now about this in more detail.
PVC insulating tape.
PVC electrical tape(insulating tape) is an insulating material made on the basis of Polyvinyl chloride. It has a standard type of tape roll, about 14-19 mm wide. A sticky coating of acrylic or rubber adhesive is applied to one side. These substances are non-toxic and therefore are absolutely harmless to human health.
As for her technical characteristics, so it has good resistance to various temperatures ranging from -30 to +50 degrees (I mean electrical tape of relatively good quality and those conditions in which it is still pleasant to work with). Also here it should be said about such quality as stretchability, which is 100-150%. This property, in turn, significantly affects the quality of the winding and the impermeability during its use.
As for the electrical insulating properties, it is designed to withstand a breakdown voltage of up to 5000 volts, which is quite sufficient for use in home and industrial work (up to 0.4 kV). To preserve its qualities, electrical tape PVC It is recommended to store in dry, not aggressive environments, at a temperature environment from +5 to +35 degrees.
And now about practical use: this insulating tape is good, first of all, because it is very pleasant to work with (it winds well, has good hermetic and dielectric properties, does not smear, stretches, etc.), but it also has one small flaw. She behaves poorly when high temperatures, namely, it melts and becomes unsuitable for its original purpose.
HB insulating tape.
HB electrical tape, is very popular and widely used in practice. This is a rubberized cotton tape with one or two adhesive surfaces. It is made from a material such as calico/calico, galosh padding or similar raw materials.
The temperature limits for it will be the range from -30 to +30 degrees. Dielectric and insulating properties are limited to 1000 volts. For storage, the most favorable conditions will be dry rooms with temperatures from 0 to +24 degrees.
Regarding practical use: this type of insulating tape has the advantage of being used in very hot and hot places. Initially, due to the fact that it is rubberized, its use is similar to PVC, but if this electrical tape is fired, then as a result it loses some qualities, but other qualities appear. Suppose we need to insulate the bare ends of the wire in a place where it is relatively hot (about 150 degrees), simple PVC insulating tape will simply melt, and if we wrap it in cotton wool, then first there will be a natural burning of this area of winding of this insulating tape (that is, combustion of the existing rubber and material).
As a result, a hard coating is formed at the winding site, which can protect against direct short-circuiting of exposed areas with other conductive parts. Although, this place is no longer resistant to high voltage. This may well be useful for use in heating devices with electric heating elements, as well as in areas close to furnaces. Since in similar electrical circuits low voltages are used (up to 36 volts).
Ordinary tape as an insulating material.
Sometimes there is an urgent need to wind insulation on bare wires and conductive areas, without having simple PVC or cotton tape on hand. From the point of view of electrical safety, this is of course very bad and incorrect, but in some cases this can be neglected by wrapping several layers of tape for the purpose of insulation, since this method will be better than leaving dangerous electrically open (bare) places not at all protected from accidental touch.
P.S. The use of electrical tape is not limited to electrical installations. This clever product is one of those things that, with its primitive design (a strip of tape coated with glue), can be used in a huge number of different areas of work, thereby proving its high significance.
HB insulating tape. HB insulating tape.
Basic information.
Subject— HB insulating tape. HB insulating tape. Basic information.
Nowadays, it is difficult to find a person who has not dealt with electrical tape (insulating tape), and also has not used it in practice at least once in his life. But not every electrician knows about its typical characteristics and basic technical properties. In this topic (HB insulating tape HB insulating tape Basic Information) I want to talk to you about exactly this.
Dielectric insulating tape (or electrical tape) is a consumable material, the main purpose of which is to provide good, sealed, reliable insulation of electrically unsafe parts (current-carrying) from external factors (moisture, sunlight, weak salt solutions, solvents).
When insulating tape is directly used in the electrical field, it is an excellent remedy high-quality insulation of electrical bare current-carrying conductors (cables, wires, tires) from accidental human contact with them or short circuit of conductors with each other (probability of short circuit).
The most used types of insulating tape are 2 main types: PVC-based insulating tape (polyvinyl chloride) and CB-based insulating tape (cotton). Various electricians, perhaps without suspecting it themselves, prefer one of these types (PVC is used more), but CB also has its best sides.
CB insulating tape (cotton insulating tape) is quite common in practice and is widely used for insulation. It is a rubberized cotton tape that has one or two adhesive sides. HB insulating tape is made from the following materials: calico/calico, galosh padding or similar raw materials. Temperature restrictions for it will be a temperature range of -30 and +30 degrees Celsius. The dielectric properties of CB insulating tape are limited to voltages up to 1000 V. It is better to store it in dry places with a temperature of 0 to +24 degrees.
Practical application: HB insulating tape has such good quality that it can be used in rather hot work places. Initially, since CB electrical tape is rubberized, its use is similar to PVC electrical tape, but if it is fired, then eventually some qualities disappear and other qualities appear. Let's say we need to insulate the exposed parts of the wire in places where there is elevated temperature(about 150 degrees). PVC insulating tape will simply begin to melt, and if you use CB insulating tape, then first the winding area of this insulating tape will be burned (that is, the existing rubber and CB material will burn).
The result will be the formation of a hard coating at the winding site, which can quite well protect bare areas with adjacent current-carrying parts from direct short circuits. This place where the burnt CB electrical tape is wound is no longer resistant to high voltage. But it can be used in heating devices up to 36V.
In some cases, there is a great need to wind an insulating layer on the exposed conductive parts of the electrical system, without having the usual CB or PVC insulating tape. From the point of view of general electrical safety rules, this is very wrong and bad, but in certain situations this can be neglected, thereby wrapping several layers of ordinary tape over the exposed wire. This will be better than leaving unprotected (bare) places completely.
PVC (polyvinyl chloride) insulating tape is made on the basis of polyvinyl chloride insulating plastic compound. An adhesive layer is applied to one side of the film. PVC insulating tape is available in different colors.
Insulating tape HB (cotton) GOST 2162-97 grade 2 POL is made on the basis of cotton fabric. The rubber mixture (glue) is applied to 2 sides of the fabric.
Ordering information: products presented in this group may have different units of measurement, which is reflected in the “Unit” column. change." When ordering, the quantity of goods is adjusted according to the minimum batch and quantity in the package.
You can pick up and pay for the goods without pre-ordering at the address: 140000 Moscow region,
Lyubertsy, st. Kotelnicheskaya, 15 V. Opening hours: weekdays from 8-30 to 17-00.
A lot of electrical insulating materials are now being produced, but nothing has yet been able to displace such a simple and inexpensive product as electrical tape from the market and this is unlikely to happen in the near future. In our online store you will find a large assortment of both PVC and CB electrical tapes at prices below market prices. This section presents a large selection of cotton ribbons.
Traditionally, insulating tape is a well-known material with excellent elastic and dielectric properties, widely used for electrical insulation when conducting or repairing electrical wires or cables and their splicing. The purpose of electrical tape is to ensure the tightness of the surfaces it covers. It must reliably protect the closed area from atmospheric influences such as moisture and solar ultraviolet radiation and limit as much as possible access to aggressive media or solvents.
What is the difference between CB electrical tape and PVC? Each of them has its pros and cons. HB electrical tape is made from a rubberized cotton base, coated with an adhesive compound on one or both sides. The base, depending on the purpose of the tape and the manufacturer, can be created from different fabrics - calico, coarse calico, galosh padding or similar materials. After special treatment, it obtains high strength, good electrical insulating qualities and retains working qualities at temperatures ranging from - 30 to + 30 C and voltages up to 1000 V. It should not be used in aggressive environments, such as acids and alkalis.
Contact-Optima always has this product on sale, both industrial type and general purpose, not only one-sided, but also double-sided HB electrical tape, where the adhesive base is applied on both sides. If you have any questions about price or assortment, our specialists will tell you at any time how to make the best choice.
If you do not intend to use all the purchased goods at once, then keep in mind that the HB electrical tape should be stored at room temperature, but if this is not possible, you need to bring it into the room before work and wait for its temperature to rise to room temperature.