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What is the final ampacity for a number 12 NM-B conductor?
What is the final ampacity for a number 12 NM-B conductor? Answer this question…
The larger the conductor the Higher the resistanc Lower the ampacity Higher the voltage Lower the resistance?
No. The larger the conductor the lower the resistance and the higher the ampacity.
This melts if the current gets to high?
The conductor's insulation can melt if the current gets higher than the ampacity of the conductor.
What is larger 12 gauge wire or 20 gauge wire?
Yes, a #12 AWG conductor has a greater diameter than a #14 AWG conductor. A #12 conductor has an ampacity of 20 amps whereas a #14 conductor only has an ampacity of 15 amps.
If the voltage is doubled the ampacity of a conductor?
double if resistance is considered same.
If the voltage is doubled the ampacity of a conductor is?
Unchanged. The conductor's ampacity is affected by its composition (copper, aluminum, etc.), cross-sectional area, and temperature, not by the supply voltage. The ampacity is limited because any conductor has resistance. When the conductor carries a load (supplies current), the conductor essentially becomes a resistance heater, and gets hot. At some point the temperature will become dangerous, either causing the conductor to melt or damaging the insulation or surrounding materials. The voltage dropped across a conductor that is supplying current to a load is computed by the following formula: E=I^2 X R Or, voltage dropped equals current through the conductor squared times the resistance of the conductor. Notice that the supply voltage is not even part of the equation. All the mentioned parameters - composition, cross-sectional area, and temperature affect its resistance. The ampacity of a conductor installed in a building can also be regulated by law, so, even though a conductor may pass a certain amount of current local laws may prohibit it's use anyway.
What is the ampacity of 10mm cable?
The rule of thumb is 1mm square=6Amp so 10mm square will,for safety reasons and for a copper conductor, carry 50Amps.
What is Wire ampacity?
It is a North American electrical term. It is a combination the words amp and capacity rolled into one word "ampacity". When talking about how much amperage a wire can legally draw, it is referred to as the wire's "ampacity".
What is the ampacity of a 10 sq mm Aluminium wire?
A 10 mm squared conductor is equal to a #8 AWG. A #8 copper conductor with an insulation factor of 75 or 90 degrees C are both rated at 45 amps.
How do you calculate the requirement of cable size for a given load?
If you know the size of the load to be served, multiply it by 125% ( times 1.25) and choose a conductor that is rated for that ampacity or higher.
What determines the ampacity of wire?
Conductors must have an ampacity not less than the maximum load that they are supplying.
What determine the ampacity of a wire?
Conductors must have an ampacity not less than the maximum load that they are supplying.
