What are four factors to consider when selecting conductors?
- Rated Voltage.
- Current Carrying Capacity.
- Derating Factor.
- Voltage Drop.
- Short circuit Withstand.
- Availability of Cables.
- Bending Radius.
- Other Factors.
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People also ask, what determines the ampacity of a conductor?
The ampacity of a wire is determined by 2 things: how much heat the wire generates under a load and the heat resistance of the insulation. Heat is given off wire because of the resistance of the wire. The higher the heat rating, the more current (and heat) it can carry without degrading the insulation.
Secondly, why is airflow an important factor to consider when installing cables? An important aspect to cables longevity is the abundance of air flow during installation. The more air flow the better is the goal when cable is connected/running. This increases energy efficiency as well. Increased temperatures can damage the cables jacket and do harm to its inner workings.
Also asked, how do you choose a conductor size?
Multiply the cable's length by its material's resistivity. Copper, for instance, has a resistivity of 1.724 x 10^-8 ohm meters at room temperature. If your cable must measure 30,000 meters in length: 30,000 x 1.724 x 10^-8 = 0.0005172 ohm sq.
What are the three major factors that determine the proper size of wire to be used?
These major determining factors are:
- Conductor Size: The larger the circular mil area, the greater the current capacity.
- Ambient Temperature: The higher the ambient temperature, the less heat required to reach the maximum temperature rating of the insulation.
- Conductor Number:
- Installation Conditions: