Can I use screw wire nut connectors for work with alum cables?

Question

Can I use screw wire nut connectors for work with alum cables?

Answer

No. The screw wire nut connectors are made for copper cables only. It is also not possible to connect copper cable with an alum cable in one screw. Two well-known manufacturers have one type of screw wire connectors for work with alum cables, but the design is very different from the common types and antioxidant paste is obligatory for use in installation. Russian market offers screw wire but connectors for copper cables only.
How many wires can I connect with one screw wire nut connector?

Question

How many wires can I connect with one screw wire nut connector?

Answer

The total cross-sections of the cables should not be more than the nominal cross-section of the screw wire nut connector. If you do not want to screw the wire before inputting inside the connector, the number of wires should not be more than 3. Maximum 4. It depends on on the cross-sections of the wires, the bigger cross-sections you deal with, the less quantity you can screw.
Should I screw the wires together before input inside the screw wire nut connector?

Question

Should I screw the wires together before input inside the screw wire nut connector?

Answer

No, you don’t need it. Moreover, we do not recommend to do so. Place the wires together and put them inside the connector, screw clockwise. СИЗ-К made by KBT have special wings for easier operation of wires with bigger cross-sections. If you will do the preliminary screw with the pliers, it will do not good. First of all, the wires can be pressed and damaged by the pliers; second, you will not get the ideal screw like inside the screw wire connector. Anyways you have screwed the wires together already you can just put on the insulation tape and consider the connection to be finished, without any need in a screw wire nut connector.
Difference between СИЗ and new version СИЗ-К

Question

I have always used common screw wire nut connectors СИЗ. What is the difference between СИЗ and new version СИЗ-К?

Answer

Sometimes installation of screw wire nut connectors demands a lot of effort. The bigger the cross-section of the wire is, the more force you need to apply. And if during one day you need to do more than 10 installations, this work can seem to be a nightmare. СИЗ-K have special wings for an easier screw. The square profile of the inside spring and stronger torque effect make the connection reliable. Sometimes you can not make the screw till the end because the connector slips in your fingers, even if you have enough power to continue the screwing. The wings solved this problem. СИЗ-К have a wider range of sizes in comparison with common СИЗ connectors. If you want to compare yourself, take yellow and red connectors in СИЗ and СИЗ-K series; try to connect 3 sold wires with cross-section 2.5 mm². After such an experiment, most of the users do not mind the slight difference in price and choose СИЗ-К for their work.

Can I connect stranded and solid wire in one screw?

Question

Can I connect stranded and solid wire in one screw?

Answer

Yes, you can. Stranded wires should be screwed clockwise beforehand. If some wires do not form a cone and pop outside, correct the screw with a cutter. After that put solid and stranded wires inside the nut connector and screw clockwise.
Should I put an insulation tape over the connection made with the screw wire nut connector?

Question

Should I put an insulation tape over the connection made with the screw wire nut connector?

Answer

If there will be no vibration, there is no need for insulation tape. If you removed the insulation wrong and you can see it, it is better to put the insulation tape over the connection. Insulation tape is also useful if you want to protect your connection from dust or moist.
Sizes of screw wire connectors

Question

I have always used screw wire nut connectors made by KBT. When there was a problem with availability, I bought yellow and red connectors made by another manufacturer. They occurred to be of different sizes. Is there any standard?

Answer

Unfortunately, there was and there is no standard. In Soviet time the screw wire nut connectors were even the same color. The only progress that can be traced is the difference in colors that corresponds to the difference in sizes. However, the sizes are not universal for all the manufacturers: so you cannot be sure that the orange connector from one manufacturer will be the same size as the orange connector from another manufacturer. We recommend to use screw wire nut connectors made by KBT, because they are made in accordance with factory technical requirements, they have stability in sizes, good quality and are covered by manufacturers guarantee.
Can screw wire nut connectors be flame retardant?

Question

Can screw wire nut connectors be flame retardant?

Answer

Standard connectors СИЗ and СИЗ-К are made of flame retardant materials and can be used for making connections inside.
Can I make the connection with screw wire nut connectors outside?

Question

Can I make the connection with screw wire nut connectors outside?

Answer

Screw wire nut connectors are made for making connections inside. Minimal protection is IP20, so they cannot be used outside.
What are the advantages of a connection made with a screw wire nut connector?

Question

What are the advantages of a connection made with a screw wire nut connector?

Answer

The main reason for the popularity of screw wire nut connectors is that they repeat the traditional method of connection that used during a hundred years. The main advantages of these connectors are simplicity and speed. With the help of screw wire connectors, an electrician can make up to 10 connections very quick with good insulation. These connectors are healthier, as there is no need to inhale lead smoke produced by a solderer. One more advantage is that you can do the connection without any special tool with an exception for a good stripper. If you are ready to pay the money it costs for the speed, comfort, and reliability of connection- it is your best choice.

  • 1
  • 2
Каталоги
Close