What are the factors affecting selection of cable?

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What are the factors affecting selection of cable?

Cable size selection is based on three main factors:

  • Current carrying capacity.
  • Voltage regulation.
  • Short circuit rating.

On which factor selection of wires and cables depends?

Cable size selection is dependent upon the following factors: current carrying capacity, short circuit rating and voltage regulation.

What are the factors that should be taken into account with network cables in terms of attenuation and humidity?

What Causes Signal or Cable Attenuation?

  • Frequency and Noise. All networking and electrical cables give off an electromagnetic frequency within the cable or wireless vicinity.
  • Physical Surroundings.
  • Distance.

What factors should be considered when choosing electrical wire size?

When choosing the conductor size for electrical wiring, there are TWO important factors which must be considered, and these are: (1), the safe current-carrying capacity without overheating, and (2), keeping the voltage loss to an acceptable minimum.

What is cable selection?

Cable selection is about choosing the appropriate type of conductor and selecting a suitable size/cross-section area/ diameter of the conductor according to the application.

What are four factors to consider when selecting conductors?

Four factors to consider when selecting circuit conductors are the current flow, the voltage, the voltage drop over distance, and heat resistance.

Which factors contribute to cable attenuation?

What Causes It?

  • Noise. Extra noise on networks, like radio frequencies, electrical currents, and wire leakage, may interfere with the signal and cause attenuation.
  • Physical surroundings. Physical surroundings like temperature, wall barriers, and improper wire installation may distort the transmission.
  • Travel distance.

Which criteria are important in choosing a UTP cable for your network connection?

While UTP cable has no shielding. It is designed to cancel electromagnetic interference through the way the pairs are twisted inside the cable. If the Ethernet cable runs in the environment where the interference or crosstalk is not the main concern, it is suggested to choose UTP cables which are lower in cost.

How do I choose a cable?

Full Load Current = (100 · 1000) / (1.732 · 415) = 139 Amp….Temperature Correction Factor (K1) When Cable is in the Air.

Temperature Correction Factor in Air: K1
Ambient Temperature Insulation
35 0.94 0.96
40 0.87 0.91
45 0.79 0.87

Why is cable selection important?

It is essential to know cable construction, characteristics, and ratings to understand problems related to cable systems. The key to the successful operation of a cable system is to select the most suitable cable for the application, make a correct installation, and perform the required maintenance.

What are the factors to consider for selection of conductor size of overhead lines?

Some of the factors which decides the size of the conductors designed for distribution system are given below:

  • Current carrying capacity of the conductor or distribution line.
  • Allowable voltage drop or line regulation.
  • Breakdown strength of the conductor.

Why is it important to correctly rate and select a cable?

One of the most important aspects of designing and building any part of a vehicle electrical system is determining the correct size and type of cable to use for each circuit. Too small a cable size and you’ll run the risk of generating heat in the cable; too large and you’ll be wasting money on copper you don’t need.

What are the factors that affect cable selection?

Cable selection can be based upon the following five key factors: 1 Cable installation 2 Cable construction 3 Cable operation (voltage and current) 4 Cable size 5 Shielding requirements More

What are the factors that affect a network?

the bandwidth of the transmission medium. the type of network traffic. network latency. the number of transmission errors. Any network can be affected by one or a combination of these factors. Bandwidth is a measure of the amount of data that the medium can transfer over a given period of time.

What should be considered when selecting a cable system?

The selection and application of a cable system should be based on correct selection of the type of cable arrangement required for the purpose. The selection of cable insulation and finish covering is normally based on the type of installation, ambient operating temperature, service conditions, type of load served, and other criteria as applicable.

How does the current rating of a cable depend?

This depends on the amount of heat produced and the surrounding temperature of the soil. The current rating of the cable apart from the above factors also depends on the large number of factors such as method of cable laying employed, spacing between the cables, number of cores of the cable and thermal conductivity of the soil.

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