Top Answer
User Avatar
Wiki User
Answered 2007-07-23 17:03:04

You go to the NEC and look at the chart for developed length and the ambient temperature and the load factor and if it solid or stranded wire as stranded allows for more voltage

User Avatar

Your Answer


Still have questions?

Related Questions

What affects the resistance of an electric conductor?

The material from which the conductor is made, the length of the conductor, the diameter of the conductor and the temperature of the conductor are all things that impact its resistance.

What gauge conductor has the least resistance?

Resistance becomes lower as the cross sectional are of the conductor becomes larger. Hence higer the diameter of the conductor lower the resistance.

What is the value of the resistance when both length and diameter are double?

Doubling the diameter of a circular-section conductor will quadruple its cross-sectional area and, therefore, reduce its resistance by a quarter. Doubling the length of a conductor will double its resistance. So, in this example, the resistance of the conductor will halve.

Do thick wires have high or low resistance?

Low resistance.AnswerSince resistance is inversely proportional to the cross-sectional area of a conductor, increasing the diameter ('thickness') of a conductor will reduce its resistance.For example, doubling the diameter of a circular-section conductor will quadruple its cross-sectional area, and reduce its resistance by one quarter.

What would be the effect of resistance of a conductor of doubling its diameter?


When the diameter of a conductor is doubled what happens to its resistance?

Resistance will decreases... Because R is inversely proportional to Area of the conductor.AnswerIf the conductor has a circular cross-sectional area, then doubling the diameter will reduce the resistance to one quarter of its original distance. This is because area is proportional to the square of the radius, and resistance is inversely proportional to cross-sectional area.

How does the resistance of a circular conductor behave if the diameter of the conductor is halved?

as the cross sectional area is halved, the resistance is increased by four times because the relation is R=(resistivity of materilal*length of conductor)/area of cross section of conductor

A piece of wire 100 m long has a diameter of 1 mm with a resistance of 2 ohms calculate the resistance of the same wire 2 km long with the same current?

If the wire length is 100m and the Diameter is 1mm calculate the Resistance of wire?

How does the resistance of a wire vary with its area of cross section?

Conversely, as the cross-sectional area of the conductor icreases, the resistance decreases, just as a pipe of large diameter offers less resistance to fluid flow than does a pipe of small diameter.

How is electrical resistance decreased?

Ways to reduce electrical resistance: increase the diameter of the conductor, decrease or increase the temperature of conductor (depending on its thermal characteristics), decrease the length of the conductor. A change in the material out of which the conductor is made can decrease resistance, too. And there is the phenomenon of superconductivity. In a simple circuit the resistance can be lowered by adding resistors in parallel. The total circuit resistance will then decrease. You can also reduce resistance by substituting resistors of lower value, or by adjusting a potentiometer, or pot, to a lower value.

Is resistance inversely or directly proportional to the length?

If you have a conductor ... say, a copper wire ... and you keep its diameter and temperatureconstant, then yes, its resistance will be directly proportional to its length.

Describe the difference between a material that is a good conductor or electricity and a material that has a high resistance?

An object is called as a good conductor of electricity when it allows the electrons to flow within it easily ( for example a copper rod). Resistance it the opposition to the flow of electrons through it. Resistance is affected by following factors of any object: 1) More the length more the resistance 2) Less diameter, more the resistance 3) Temperature Resistance of any object can be lowered by lowering the temperature. The point where the Resistance of any conductor drops close to zero is called superconductivity.

How do you calculate field diameter?

How do you calculate field diameter?

What will the current-carrying capacity be if a conductor has a diameter of one half inch but there is a nick in one section so that the diameter of that section is one fourth inch?

The resistance of such a conductor will be less than without such a nick. In other words, for the same voltage, you would get less current.

How can the diameter of wire affect the resistance?

Basic: The larger the diameter the less resistance.Deep:R = p (L / A)The resistance is proportional to the length of the wire divided by its cross-sectional area. p is the resistivity of the material in question and varies greatly. Since area (assuming a circular wire) is A = pi * r2 the larger the diameter of the wire the lower its resistance will be.AnswerResistance is inversely proportional to the square of the diameter. So, if you double the diameter, you will quarter the resistance. If you halve the diameter, you will quadruple the resistance.

What would the resistance of the wire if the resistance is 10 ohms be the same if it were twice as thick?

For a circular-section conductor, doubling its diameter will quadruple its cross-sectional area. Since resistance is inversely-proportional to a conductor's cross-sectional area, its resistance would, therefore, fall by a quarter, to 2.5 ohms.

How does the diameter of the wire affect the resistance?

The larger the diameter wire will have less resistance, it has more area for the current to travel through.

What is the relationship between the blood vessel diameter and peripheral resistance?

Lower the diameter of the blood vessels, more is the peripheral resistance.

Why the thin wire has greater resistance to electricity?

Resistance is defined as a property of materials due to which a material opposes the flow of current through themselves. And Resistance is inversely proportional to area of cross section of conductor. As the cross section area of thin wire is less hence resistance is more. So, as wire diameter increases its resistance decreases and vice versa

Does stranded wires have more resistance than a solid wire?

That depends on the metal composition of the wire, the diameter of the conductor and the amount of energy being applied. In general though a stranded wire of the same composition as a solid wire does not have more resistance.

What is the resistance when diameter is halved?

R= pL/A(p being the resistance value of the material). A =πr^2, if u reduce the diameter by 1/2, you'll quadruple the resistance

Why does voltage decrease when diameter of a wire increases?

If you are referring to the voltage drop on a wire decreasing as the diameter of a wire is increased, it is because there is less resistance in the larger wire than the small one. Doesn't take as much voltage to push through the conductor.

What three things effect the value of the applyed voltage in a conductor?

Lenght, diameter and material of the conductor.

What does break resistance means?

Resistivity is the ability of any metal or conductor to resist the flow of current depending on the diameter of the conductor.Electric fuse is an alloy with low resistivity and breaks when the resistance is high.This is the point of break resistance. Literary meaning of break resistance would be an act of greater force to break any opposing force as a breakthrough the defence.

Do thinner or thicker wires have more resistance?

Over the same distance the larger diameter wire will have less resistance that the smaller diameter wire.