What does conductor Stranding mean?
What does conductor Stranding mean?
Stranded conductors are composed of uninsulated “strands” of wire twisted together. The advantages of conductor stranding over a single strand of equal cross-section are increased flexibility and flex-fatigue life.
What does 7×30 stranding mean?
What does 7×30 mean? What is 7 and what is 30? It means the wire is made up of 7 individual copper strands, each 30. gauge, to make a 22 gauge wire.
What is concentric stranding?
Definition: A stranding configuration in which individual wires are stranded concentrically with no reduction in overall diameter. Typically used for bare conductors.
What is class K stranding?
CLASS K: Cords and cables composed of No. 30 AWG copper wires. Stationary service. CLASS M: Cords and cables composed of No.
Why conductor is stranded?
Basic, reason of using stranded conductor is to make the conductor flexible. Hence, it becomes difficult to transport a single solid conductor of long length over the distance. To eliminate this drawback, conductor is formed by using several thin wires of small cross section. These thin wires are called strands.
What’s better solid wire or stranded?
In general, solid cables are better electrical conductors and provide superior, stable electrical characteristics over a wider range of frequencies. They are also considered more rugged and less likely affected by vibration or susceptible to corrosion since they have less surface area than stranded conductors.
What is compressed stranding?
COMPRESSED stranding contains a conventional conductor manufactured to a diameter not more than 3% below the nominal diameter of a non-compressed conductor of the same cross-sectional area. UNIDIRECTIONAL CONCENTRIC stranding is the same as true concentric except that lay direction is the same in all layers.
What does AWG stand for?
American Wire Gauge
AWG (American Wire Gauge) is a U.S. standard set of non-ferrous wire conductor sizes.
What does concentric cable mean?
concentric cable means a composite cable comprising an inner conductor which is insulated and one or more outer conductors which are insulated from one another and are disposed over the insulation of, and more or less around, the inner conductor; Sample 1. Sample 2.
What is class K cable?
From 6 AWG to 500 MCM, Class K is considered a standard welding cable. A single stranded copper conductor, comprised of 30 AWG strands with an EPDM jacket. Class K is both durable and economical, used for secondary voltage resistance welding leads and other power supply applications that do not exceed 600 volts.
What is class B stranded wire?
Thus, class B has the least amount of stranding, classes C, D, G, and H have intermediate amounts of stranding, and classes I, K, and M have the most finely stranded cables. Class B is the most common type of stranded cable and is the common stranding of building wire.
How are fibrotic stranding related to lung disease?
Many of these strands or lines simply reflect inflammation or scarring but are not at all related to a serious interstitial lung disease, called pulmonary fibrosis. The strands are a common x-ray finding and not a sign of serious pulmonary disease. The same can be said of stable sub-pleural nodules.
What causes fibrotic stranding in the SEPTA?
The septa are normal structures that compartmentalize lung lobes and lobules. The thickening can be caused by fluid or scarring. When these strands, or lines, follow a bronchus, they are thought to represent thickening of the bronchial wall. This thickening is most often associated with chronic bronchitis or asthma.
Where is fibrotic stranding on a chest X-ray?
chest x-ray showed discoid atelectasis in the left lung base. there is fibrotic stranding from the right hilum into the right midlung. compared to other x-rays this is the first time this has showed up.there ar tiny subplural nodules right upper lung which are stable.
What does fat stranding mean on a CT scan?
Fat stranding is a sign that is seen on CT. It describes the change in attenuation of fat around an inflamed structure and is a very helpful signpost for intra-abdominal pathology. This is a summary article; read more in our article on fat stranding on CT.