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Frequently Asked Questions from TANO CABLE

Faq
FAQ
Q
What does AWG mean?
A
Simply stated, AWG or American wire gauge is the standard system that determines a cross section of a wire using a gauge for solid, round electrical wires. The higher the AWG number, the thinner or smaller the wire. Used since 1857, AWG has helped users determine a wire’s current-carrying ratings.

AWG is determined by figuring out the radius of the wire squared, times pi. Most often, we use the term “circular mil,” which is the area of a 1/1000 or 1 mil diameter circle. These measurements are made on the wire alone; no jacketing or insulation factors into AWG size.

AWG relates also to resistance; so a thicker wire has less resistance and thus can carry more voltage a longer distance.

When stranding conductors, it is common to use smaller gauge sizes with higher AWG numbers, as they are more flexible and durable during applications that experience bending and vibrations. And although you can tightly braid or wind wires, there will always be a small gap between each strand, so stranded AWG wires are always slighter bigger in diameter than their solid wire counterparts.

AWG tables are only for single, round conductors. A conversion table is required for stranded conductors. Most cable providers provide AWG data on their spec sheets.
Q
How many types of flexible cable are there?
A
According to Tano Cable products classify, there are four common types of flexible cable. These include rolling flexible cable, bending flexible cable or "tic-toc," torsional flexible cable and variable/random motion flexible cable. Variable flexible cable include rubber cable and welding cable.
Q
Do flexible cables meet industry standards?
A
Tano Cable Flexible Cable meet various standards. Flexible Cable may be UL Listed, CSA certified, CE marked and/or meet military specifications. However, every flexible cable is different, so make sure to specify if your flexible cable needs one or more standards to be met.
Q
What are applications of flexible cable?
A
Flexible Cable applications are to withstand the extreme stress of flexing and motion. A few applications include: drag chain applications, applications with repetitive bending and torsion stress, machine tools, data processing equipment, robotics, assembly lines, automation networking, microprocessor and computer interconnects and many more.
Q
What considerations should be noticed during flexible towline cable installation?
A
Unlike ordinary fixed installation cable, flexible towline cable should pay attention to the following eight rules:
1. You must pay attention to the minimum bend radius of the flexible towline cable.
2. Flexible towline cable can not twist within laying, that is the cable can not be unfasten from one end of the cable reel or cable drum, and it should rotate the reel or drum to expand the cable, if necessary, cable can be expanded or suspended.
3. The flexible cables in towline must not touch each other or bundled together.
4. If towline break, the flexible cables in it which also need to be replaced because of damage caused by excessive stretching can not be avoided.
5. Flexible cables must be laid loosely side by side in the towline, and apart as far as possible, separate with septa or isolated penetration stent in separator holes, in towline flexible cable voids between the cables should be at least 10% of cable diameter.
6. Under the circumstance of meeting same electrical requirements, the diameter of flexible cable is smaller than other similar cable, with lighter weight. Flexible cable bending performance is very good, the minimum bend radius could be up to 5 times of cable diameter.
7. Two ends of flexible cable must be fixed, or at least at the movement end of the towline must be fixed. Mobile Point of flexible towline cable distance from the ends should be 20-30 times of the cable diameter.
8. Flexible towline cable is fully mobile within the bend radius can not be forced to move. Or between each other so that the cable between the guide means and movable relative. After a period of operation, it is best to check the position of the cable.
Tano Cable supply many kinds of flexible cables with high quality, welcome any inquiry!
Q
What is the overhead bare conductor cable laying claims?
A
Factories, the countryside erection of overhead bare conductor cable should note the following requirements:

1. If overhead bare conductor cables are arranged vertically, the distance between lines to be bigger than the horizontal arrangement, because the wire swinging up and down swing is larger than the horizontal. Such as the prescribed distance between 6KV overhead bare conductor arranged vertically is 1m, it is 0.7m horizontally.

2. On the same poles, set up both copper bare conductor cable and aluminum bare conductor cable, then the copper bare conductor cable should be erected on top. Because the thermal expansion coefficient of aluminum bare conductor is larger than copper, the vertical distance can be maintained between copper bare conductor and aluminum bare conductor when copper bare conductor cable on the top.

3. The minimum cross-sectional of overhead bare conductor cable, copper bare conductor is 6mm2, aluminum bare conductor is 16mm2. The requirement is due to considering the mechanical strength of bare conductor.

4. Bare conductor cables used in the same section must match “3 Same”, that is the same material, the same type and the same size. Neutral line cross section allows 50% smaller than phase line, but the material and the type should be corresponding to the same phase.

5. It had better to use concrete poles, because of its high mechanical strength, good corrosion resistance, and it’s cheap. Cross arm should use angle iron cross arm, because the angle iron cross arm with a durable, high strength and easy installation features.

6.  When installing overhead bare conductor cable, zero line should be erected below the phase line. Due to the zero line cross-sectional area is generally smaller than the phase line, easily disconnected due to wind and other factors, it will not come into contact with the phase line, that is, the zero line is not in danger of high voltage.

7. Overhead bare conductor cable is better to use multiple strands, do not use single strand. Due to mechanical strength of multiple strands is good.

8. Overhead bare conductor cable can’t be connected by welding method, for bare conductor will be annealed under heating welding so that the mechanical strength will decline.
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